Journal articles: 'M.A.C.H. 3'

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Yu-Ning, LIU, LIU Zi-Zhong, LI Wei-Qi, LIU Dong-Sheng, and GE Xiang-Wei. "Structures and Aromaticities of Complexes (1,3,5-C₃P₃H₃)M and (1,3,5-C₃P₃H₃)₂M (M=Ti, V, Cr)." Acta Physico-Chimica Sinica 27, no. 10 (2011): 2282–90. http://dx.doi.org/10.3866/pku.whxb20111012.

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Anggraini, Mery, and Narwen . "BILANGAN KROMATIK LOKASI UNTUK GRAF C n K m , DENGAN n 3 DAN m 1." Jurnal Matematika UNAND 4, no. 1 (March 1, 2015): 40. http://dx.doi.org/10.25077/jmu.4.1.40-46.2015.

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Misalkan G merupakan graf terhubung dan c merupakan pewarnaan k yangsesuai dari G dengan warna 1; 2; ; k. Misalkan = fS1; S2; ; Sg merupakan partisidari V (G) ke dalam kelas-kelas warna yang saling bebas, dimana Skmerupakanhimpunan dari titik yang diberi warna i, dengan 1 i k. Kode warna c(v) dari titikV merupakan vektor dengan banyak unsur k yaitu(d(v; S1); d(v; S2); ; d(v; S));dimana d(v; Si) adalah jarak dari v ke Sik, dengan 1 i k. Jika untuk setiap dua titikyang berbeda u; v di G, c(u) 6 = c(v), maka c disebut sebagai pewarnaan kromatiklokasi dari G. Pewarnaan lokasi dengan banyak warna yang digunakan minimum disebutpewarnaan lokasi minimum, dan kardinalitas dari himpunan yang memuat pewarnaanlokasi minimum disebut bilangan kromatik lokasi dari G, dinotasikan dengan (G).Graf korona G H dari dua graf G dan H adalah graf yang diperolehdengan mengambil sebuah duplikat dari graf G dan sebanyak jV (G)j duplikatH1; H2; ; Hdari H, kemudian menghubungkan titik ke-i dari graf G ke setiaptitik di HjV (G)j, i = 1; 2; 3; ; jV (G)j. Pada tulisan ini, akan dikaji kembali makalah [2]tentang bilangan kromatik lokasi dari graf CiKata Kunci: Bilangan kromatik lokasi, Graf koronanKm, n 3 dan m 1.

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Costa, Edílson, Adriano R. Sassaqui, Anne K. da Silva, Norton H. Rego, and Bruna G. Fina. "Soursop seedlings: emergence and development under different cultivation environments and substrates – Part I." Engenharia Agrícola 36, no. 2 (April 2016): 217–28. http://dx.doi.org/10.1590/1809-4430-eng.agric.v36n2p217-228/2016.

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ABSTRACT Seedling quality is crucial to obtain vigorous plants in the field. This study aims to evaluate the emergence and development of soursop seedlings in different substrates in protected environments. The experiment was conducted at the Mato Grosso do Sul State University and carried out using five protected environments: greenhouse, greenhouse with thermo-reflective screen, nursery with monofilament screen, nursery with thermo-reflective screen, and nursery with palm thatch. The substrates (S) consisted of cattle manure (M), humus (H), cassava branches (C), and vermiculite (V) as in the following ratios: S1 = H + V (1:3), S2 = H + V (1:1), S3 = H + V (3:1), S4 = H + C (1:3), S5 = H + C (1:1), S6 = H + C (3:1), S7 = M + V (1:3), S8 = M + V (1:1), S9 = M + V (3:1), S10 = M + C (1:3), S11 = M + C (1:1), S12 = M + C (3:1), S13 = H + M + V (1:1:1), S14 = H + M + C (1:1:1), and S15 = H + M + V + C (1:1:1:1). For the statistical analysis, each of those environments was considered as an experiment in which was used the completely randomized design; subsequently, it was performed a combined analysis of them. In summary, the greenhouse with thermo-reflective screen and combined substrates with “M + V” promote greater development of the seedlings. High concentrations of “V” or “C” cause no beneficial effect on soursop seedlings.

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Bathie, Fiona L. B., Chris J. Bowen, Craig A. Hutton, and Richard A. J. O'Hair. "Unimolecular reactivity of organotrifluoroborate anions, RBF 3 − , and their alkali metal cluster ions, M(RBF 3 ) 2 − (M = Na, K; R = CH 3 , CH 3 CH 2 , CH 3 (CH 2 ) 3 , CH 3 (CH 2 ) 5 , c‐C 3 H 5 , C 6 H 5 , C 6 H 5 CH 2 , CH 2 CHCH 2 , CH 2 CH, C 6 H 5 CO)." Rapid Communications in Mass Spectrometry 32, no. 13 (May 27, 2018): 1045–52. http://dx.doi.org/10.1002/rcm.8134.

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Zeng, Wu-Lan, Sai Bi, and Jun Wan. "3-(Benzotriazol-1-yl)-1-m-tolylpropan-1-one." Acta Crystallographica Section E Structure Reports Online 63, no. 3 (February 7, 2007): o1084—o1085. http://dx.doi.org/10.1107/s1600536807004503.

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In the title compound, C16H15N3O, the whole skeleton of non-H atoms is approximately planar; the dihedral angle is 1.45 (2)° between the benzene and triazole rings in the benzotriazole unit and 6.46 (1)° between the other terminal benzene ring and the benzotriazole unit. The crystal structure is stabilized by C—H...π interactions.

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Cheng, Dong, Xiangzhen Meng, Zeyuan Sheng, Shuangming Wang, Yuanyuan Duan, and Ziqian Li. "Crystal structures of (E)-3-(furan-2-yl)-2-phenyl-N-tosylacrylamide and (E)-3-phenyl-2-(m-tolyl)-N-tosylacrylamide." Acta Crystallographica Section E Crystallographic Communications 72, no. 6 (May 10, 2016): 797–800. http://dx.doi.org/10.1107/s2056989016007611.

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In the titleN-tosylacrylamide compounds, C20H17NO4S, (I), and C23H21NO3S, (II), the conformation about the C=C bond isE. The acrylamide groups, [–NH—C(=O)—C=C–], are almost planar, with the N—C—C=C torsion angle being −170.18 (14)° in (I) and −168.01 (17)° in (II). In (I), the furan, phenyl and 4-methylbenzene rings are inclined to the acrylamide mean plane by 26.47 (11), 69.01 (8) and 82.49 (9)°, respectively. In (II), the phenyl, 3-methylbenzene and 4-methylbenzene rings are inclined to the acrylamide mean plane by 11.61 (10), 78.44 (10) and 78.24 (10)°, respectively. There is an intramolecular C—H...π interaction present in compound (II). In the crystals of both compounds, molecules are linked by pairs of N—H...O hydrogen bonds, forming inversion dimers with anR22(8) ring motif. In (I), the dimers are reinforced by C—H...O hydrogen bonds and linked by C—H...π interactions, forming chains along [011]. In the crystal of (II), the dimers are linkedviaC—H...O hydrogen bonds, forming chains along [100]. The chains are further linked by C—H...π interactions, forming layers parallel to (010).

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Dequeker, Jan. "M. C. Hochberg, A. J. Silman, J. S. Smolen, M. E. Weinblatt, M. H. Weisman, Rheumatology Edition, 4th edn." Clinical Rheumatology 27, no. 5 (February 28, 2008): 683. http://dx.doi.org/10.1007/s10067-008-0859-3.

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Vdovenko, Sergei, Igor Gerus, Elena Fedorenko, and Valery Kukhar. "C–H⋯F Hydrogen Bond and Integral Intensities of Vinyl C–H Vibtations in Push-Pull β-Dimethylaminotrifluoromethyl Ketone and Its Deuterated Analog." ISRN Spectroscopy 2013 (January 17, 2013): 1–13. http://dx.doi.org/10.1155/2013/640896.

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The accurate analysis of infrared spectra (both wavenumbers and intensities) of (E)-4-(dimethylamino)-1,1,1-trifluorobut-3-en-2-one (DMTBN) and (E)-4-(hexadeutero-dimethylamino)-1,1,1-trifluorobut-3-en-2-one (d6-DMTBN) revealed that besides intramolecular hydrogen bond in the (EE) conformer, these enaminoketones form cyclic dimers between the (EZ) and (EE) conformers due to intermolecular hydrogen bonds, namely, O=C and . Evaluation of constant and enthalpy of formation of these H-bonds revealed that O=C bond has greater and more negative than bond (cf. 214.4 M−1, −21.7 kJ M−1dm3, and 16.4 M−1, −6.7 kJ M−1dm3, resp.). Consequently, stronger H-bond ⋯O=C is formed in the first place, whereas weaker H-bond is formed afterward. Moreover, formation of intermolecular hydrogen bond has influence on C–F vibrations, but analysis of this influence must take into account the fact that these vibrations in some cases are coupled with . True enthalpy of the equilibrium (EZ)⇌(EE) is positive (25.3 kJ M−1dm3), thus confirming results of DFT calculations, according to which the (EZ) conformer is more stable than the (EE) one.

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CHENG, SHUANG, HAIYANG LI, YING LIU, JUN LIANG, KEMEI PEI, and DONGMEI NIU. "PROTON AND ALKALI METAL IONS ATTACHED TO ALKYLPEROXYL RADICALS: STRUCTURE AND STABILITY OF M+-CnH2n+1O2 (M = H, Li, Na, K; n = 1 ~ 3) COMPLEXES." Journal of Theoretical and Computational Chemistry 05, no. 03 (September 2006): 523–34. http://dx.doi.org/10.1142/s0219633606002507.

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The structure and stability of the still experimentally unknown M +- C n H 2n+1 O 2 ( M = H , Li , Na , K ; n = 1 ~ 3) complexes were theoretically investigated via density function theory at the B3LYP/6-311+G(3df,2p)//B3LYP/6-311G(d,p) level. The addition of alkali metal ions ( Li , Na , and K ) to C n H 2n+1 O 2 are found to form only one stable structure, while proton transfer reactions with C n H 2n+1 O 2 produce two isomers except for CH 3 CH 2 CH 2 O 2. The optimized geometries and Mulliken population analysis indicate that the M + ( M = Li , Na , K )- C n H 2n+1 O 2 complexes exist as ion-dipole molecules. Our prediction for the affinity energies of M + to C n H 2n+1 O 2 are 165.4, 178.0, 181.9 and 176.8 kcal/mol ( H +); 34.3, 36.4, 37.5, and 38.4 kcal/mol ( Li +); 24.4, 26.1, 26.9, and 27.5 kcal/mol ( Na +); and 17.5, 19.2, 19.6, and 20.0 kcal/mol ( K +), respectively. Thus, these values suggest that C n H 2n+1 O 2- M + ( M = H , Li , Na , K ) complexes could be detected as stable species in gas phase at room temperature by ion attachment mass spectrometry.

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Osada, Hiroyuki. "Note on the class-number of the maximal real subfield of a cyclotomic field, II." Nagoya Mathematical Journal 113 (March 1989): 147–51. http://dx.doi.org/10.1017/s0027763000001306.

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For an integer m > 2, we denote by C(m) and H(m) the ideal class group and the class-number of the fieldK = Q(ζm + ζm−1)respectively, where ζm is a primitive m-th root of unity. Let q be a prime and /Q be a real cyclic extension of degree q. Let C() and h() be the ideal class group and the class-number of . In this paper, we give a relation between C() (resp. h()) and C(m) (resp. H(m)) in the case that m is the conductor of (Main Theorem). As applications of this main theorem, we give the following three propositions. In the previous paper [4], we showed that there exist infinitely many square-free integers m satisfying n|H(m) for any given natural number n. Using the result of Nakahara [2], we give first an effective sufficient condition for an integer m to satisfy n|H(m) for any given natural number n (Proposition 1). Using the result of Nakano [3], we show next that there exist infinitely many positive square-free integers m such that the ideal class group C(m) has a subgroup which is isomorphic to (Z/nZ)2 for any given natural number n (Proposition 2). In paper [4], we gave some sufficient conditions for an integer m to satisfy 3|H(m) and m≡l (mod 4). In this paper, using the result of Uchida [5], we give moreover a sufficient condition for an integer m to satisfy 4|H(m) and m ≡ 3 (mod 4) (Proposition 3). Finally, we give numerical examples of some square-free integers m satisfying 4|H(m) and m ≡ 3 (mod 4).

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Cheng, Qing-Ming. "Complete maximal spacelike surfaces in an anti-de Sitter space {\bf H}^{4}_{2}(c)." Glasgow Mathematical Journal 42, no. 1 (March 2000): 139–56. http://dx.doi.org/10.1017/s0017089500010168.

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In this paper, we prove that if M^2 is a complete maximal spacelike surface of an anti-de Sitter space {\bf H}^{4}_{2}(c) with constant scalar curvature, then S=0, S={-10c\over 11}, S={-4c\over 3} or S=-2c, where S is the squared norm of the second fundamental form of M^{2}. Also(1) S=0 if and only if M^2 is the totally geodesic surface {\bf H}^2(c);(2) S={-4c\over 3} if and only if M^2 is the hyperbolic Veronese surface;(3) S=-2c if and only if M^2 is the hyperbolic cylinder of the totally geodesicsurface {\bf H}^{3}_{1}(c) of {\bf H}^{4}_{2}(c).1991 Mathematics Subject Classifaction 53C40, 53C42.

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Clark, Charles R., Allan G. Blackman, M. Ross Grimmett, and Akbar Mobinikhaledi. "C(2)-H isotopic exchange in coordinated imidazoles revisited. The case of the [Co(NH3)5ImH]3+ ion." Canadian Journal of Chemistry 77, no. 2 (February 1, 1999): 178–81. http://dx.doi.org/10.1139/v98-232.

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The temperature dependence of the acid ionization constants of [Co(NH3)5ImH]3+ in H2O (I = 1.0 M (NaClO4)): pKa (°C) = 10.10 ± 0.04 (25.0), 9.92 ± 0.03 (30.0), 9.82 ± 0.02 (35.0), 9.62 ± 0.03 (40.0), and [Co(ND3)5ImD]3+ in D2O (I = 0.35 M (NaClO4)): pKa (°C) = 10.58 ± 0.06 (25.0), 9.46 ± 0.08 (60.0) is reported. Observed first-order rate constants for H/D exchange at C-2 in [Co(ND3)5ImD]3+ over the pD range 8.08-11.20 (60.0°C, I = 0.35 M (NaClO4)) follow an equation of the form: kobs = kODKw/(aD+ + Ka)γ±, with kOD (0.27 ± 0.06 M-1 s-1) corresponding to the rate constant for OD--catalyzed abstraction of H-2 in [Co(ND3)5ImD]3+, and Ka ((2.8 ± 0.7) × 10-10 M, pKa = 9.55 ± 0.13) to the acid ionization constant of this species. No evidence was found for a pathway to H/D exchange in the imidazolate moiety of [Co(ND3)5Im]2+.Key words: kinetics, H/D-exchange, imidazole, metal complex.

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Verdugo-Díaz, G., M. O. Albáñez-Lucero, and R. Cervantes Duarte. "ESTIMACIÓN DE LA PRODUCTIVIDAD PRIMARIA DURANTE OTOÑO-INVIERNO EN LA BAHÍA DE LA PAZ, B.C.S., MÉXICO." CICIMAR Oceánides 23, no. 1-2 (December 31, 2008): 45. http://dx.doi.org/10.37543/oceanides.v23i1-2.44.

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Se analizó la variabilidad de la productividad primaria en Bahía de La Paz, durante noviembre de 1997 y 2000, enero de 1998 y febrero de 2001. Se identificó Agua del Golfo de California en mayor proporción; Agua Superficial Ecuatorial y Agua Subsuperficial Subtropical. En noviembre de 1997 se registró el valor promedio máximo de temperatura (~27.62 °C) y en febrero el valor mínimo (~19.16 °C). El índice de Simpson (Ö) indicó que durante noviembre de 1997 (~286.6 J m-3) la columna de agua presentó mayor estratificación, mientras que en noviembre de 1998 (~60.4 J m-3) y febrero de 2001 (~94.5 J m-3) se encontró mezclada. En noviembre de 1997 se registraron bajos valores de nitratos (~1.52 µM), nitritos (~0.04 µM) y clorofila a (~0.44 mg Cla m-3). En febrero de 2001 se registraron valores mayores de nitratos (~7.46 µM), nitritos (~0.76 µM) y clorofila a (~1.07 mg Cla m-3). La productividad primaria superficial e integrada presentaron sus promedios máximos en noviembre de 2000 (~5.09 mg C m-3 h-1 y 75.54. mg m-2 h-1) y mínimos en noviembre de 1997 (~2.93 mg C m-3 h-1 y ~55.29 mg m-2 h-1), respectivamente. De acuerdo a investigaciones anteriores, los valores reportados de productividad son característicos de la temporada fría de la bahía con excepción de noviembre de 1997, que presentó influencia de El Niño. Primary productivity stimation during autumm-winter in Bahía de La Paz, B.C.S., Mexico We analyzed the variability of primary productivity in Bahía de La Paz during November 1997 and 2000, January 1998 and February 2001. Water was identified in the Gulf of California in higher proportion; Surface Water and Water Subsuperficial Equatorial Subtropical. In November 1997 we saw the average maximum temperature (~ 27.62 ° C) in February and the lowest value (~ 19.16 ° C). The index of Simpson (Ö) indicated that during November 1997 (~ 286.6 J-3 m) column of water with greater stratification, while in November 1998 (~ 60.4 m J-3) and February 2001 (~ 94.5 J m-3) was mixed. In November 1997 there were low values of nitrate (~ 1.52 µM), nitrites (~ 0.04 µM) and chlorophyll a (Cla ~ 0.44 mg m-3). In February 2001, there were larger values of nitrate (~ 7.46 µM), nitrites (~ 0.76 µM) and chlorophyll a (Cla ~ 1.07 mg m-3). The primary productivity and integrated surface presented their highest averages in November 2000 (C ~ 5.09 mg m-3 h-1 and 75.54. mg m-2 h-1) and minimum in November 1997 (C ~ 2.93 mg m-3 h-1 and ~ 55.29 mg m-2 h-1), respectively. According to previous research, reported productivity values are characteristic of the cold season of the bay with exception of November 1997, which showed influence of El Niño.

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Verdugo-Díaz, G., M. O. Albáñez-Lucero, and R. Cervantes Duarte. "ESTIMACIÓN DE LA PRODUCTIVIDAD PRIMARIA DURANTE OTOÑO-INVIERNO EN LA BAHÍA DE LA PAZ, B.C.S., MÉXICO." CICIMAR Oceánides 23, no. 1-2 (December 31, 2008): 45. http://dx.doi.org/10.37543/oceanides.v23i1-2.44.

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Se analizó la variabilidad de la productividad primaria en Bahía de La Paz, durante noviembre de 1997 y 2000, enero de 1998 y febrero de 2001. Se identificó Agua del Golfo de California en mayor proporción; Agua Superficial Ecuatorial y Agua Subsuperficial Subtropical. En noviembre de 1997 se registró el valor promedio máximo de temperatura (~27.62 °C) y en febrero el valor mínimo (~19.16 °C). El índice de Simpson (Ö) indicó que durante noviembre de 1997 (~286.6 J m-3) la columna de agua presentó mayor estratificación, mientras que en noviembre de 1998 (~60.4 J m-3) y febrero de 2001 (~94.5 J m-3) se encontró mezclada. En noviembre de 1997 se registraron bajos valores de nitratos (~1.52 µM), nitritos (~0.04 µM) y clorofila a (~0.44 mg Cla m-3). En febrero de 2001 se registraron valores mayores de nitratos (~7.46 µM), nitritos (~0.76 µM) y clorofila a (~1.07 mg Cla m-3). La productividad primaria superficial e integrada presentaron sus promedios máximos en noviembre de 2000 (~5.09 mg C m-3 h-1 y 75.54. mg m-2 h-1) y mínimos en noviembre de 1997 (~2.93 mg C m-3 h-1 y ~55.29 mg m-2 h-1), respectivamente. De acuerdo a investigaciones anteriores, los valores reportados de productividad son característicos de la temporada fría de la bahía con excepción de noviembre de 1997, que presentó influencia de El Niño. Primary productivity stimation during autumm-winter in Bahía de La Paz, B.C.S., Mexico We analyzed the variability of primary productivity in Bahía de La Paz during November 1997 and 2000, January 1998 and February 2001. Water was identified in the Gulf of California in higher proportion; Surface Water and Water Subsuperficial Equatorial Subtropical. In November 1997 we saw the average maximum temperature (~ 27.62 ° C) in February and the lowest value (~ 19.16 ° C). The index of Simpson (Ö) indicated that during November 1997 (~ 286.6 J-3 m) column of water with greater stratification, while in November 1998 (~ 60.4 m J-3) and February 2001 (~ 94.5 J m-3) was mixed. In November 1997 there were low values of nitrate (~ 1.52 µM), nitrites (~ 0.04 µM) and chlorophyll a (Cla ~ 0.44 mg m-3). In February 2001, there were larger values of nitrate (~ 7.46 µM), nitrites (~ 0.76 µM) and chlorophyll a (Cla ~ 1.07 mg m-3). The primary productivity and integrated surface presented their highest averages in November 2000 (C ~ 5.09 mg m-3 h-1 and 75.54. mg m-2 h-1) and minimum in November 1997 (C ~ 2.93 mg m-3 h-1 and ~ 55.29 mg m-2 h-1), respectively. According to previous research, reported productivity values are characteristic of the cold season of the bay with exception of November 1997, which showed influence of El Niño.

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Szewczyk, Kamila A., Ewa A. Drzazga-Szczȩśniak, Marcin W. Jarosik, Klaudia M. Szczȩśniak, and Sandra M. Binek. "Characteristics of the s–Wave Symmetry Superconducting State in the BaGe3 Compound." Symmetry 11, no. 8 (August 1, 2019): 977. http://dx.doi.org/10.3390/sym11080977.

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Thermodynamic properties of the s–wave symmetry superconducting phase in three selected structures of the BaGe 3 compound ( P 6 3 / m m c , A m m 2 , and I 4 / m m m ) were discussed in the context of DFT results obtained for the Eliashberg function. This compound may enable the implementation of systems for quantum information processing. Calculations were carried out within the Eliashberg formalism due to the fact that the electron–phonon coupling constant falls within the range λ ∈ 0 . 73 , 0 . 86 . The value of the Coulomb pseudopotential was assumed to be 0 . 122 , in accordance with the experimental results. The value of the Coulomb pseudopotential was assumed to be 0 . 122 , in accordance with the experimental results. The existence of the superconducting state of three different critical temperature values, namely, 4 . 0 K, 4 . 5 K and 5 . 5 K, depending on the considered structure, was stated. We determined the differences in free energy ( Δ F ) and specific heat ( Δ C ) between the normal and the superconducting states, as well as the thermodynamic critical field ( H c ) as a function of temperature. A drop in the H c value to zero at the temperature of 4.0 K was observed for the P 6 3 / m m c structure, which is in good accordance with the experimental data. Further, the values of the dimensionless thermodynamic parameters of the superconducting state were estimated as: R Δ = 2 Δ ( 0 ) / k B T c ∈ { 3 . 68 , 3 . 8 , 3 . 8 } , R C = Δ C ( T c ) / C N ( T c ) ∈ { 1 . 55 , 1 . 71 , 1 . 75 } , and R H = T c C N ( T c ) / H c 2 ( 0 ) ∈ { 0 . 168 , 0 . 16 , 0 . 158 } , which are slightly different from the predictions of the Bardeen–Cooper–Schrieffer theory ( [ R Δ ] B C S = 3 . 53 , [ R C ] B C S = 1 . 43 , and [ R H ] B C S = 0 . 168 ). This is caused by the occurrence of small retardation and strong coupling effects.

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Waters, Jordan B., and Jose M. Goicoechea. "Alkali metal salts of ditopic carbanionic carbenes as reagents for the synthesis of novel complexes of group 12 and 14 metals." Dalton Trans. 43, no. 38 (2014): 14239–48. http://dx.doi.org/10.1039/c4dt00954a.

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Reaction of the novel organo-potassium compound [:C[N(2,6-ⁱPr₂C₆H₃)]₂(CH)CK(THF)₂] (KIPr·2THF) with M[N(SiMe₃)₂]₂(M = Zn, Sn, Ge, Pb) afforded salts of the anionic three coordinate complexes [M{C(CH)[N(2,6-ⁱPr₂C₆H₃)]₂C:}{N(SiMe₃)₂}₂]⁻(M = Zn (1), Sn (2), Ge (3), Pb (4)).

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Suzuki, Hiroharu, Akiko Inagaki, Kouki Matsubara, and Toshifumi Takemori. "Alkane activation on a multimetallic site." Pure and Applied Chemistry 73, no. 2 (January 1, 2001): 315–18. http://dx.doi.org/10.1351/pac200173020315.

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Trinuclear polyhydrido complex of ruthenium effectively activates alkanes to cleave C-H bonds in a selective manner due to cooperative action of the metal centers. The reaction of (Cp´Ru) 3 (m-H) 3 (m3 -H) 2 (1) (Cp´ = h5-C5Me5) with n-alkane at 170 °C leads to the formation of a trinuclear closo-ruthenacyclopentadiene complex as a result of a successive cleavage of six C-H bonds. Introduction of a m3-sulfido ligand into the Ru3 core of the trirutheniumpolyhydrido cluster significantly modifies the regioselectivity of the alkane C-H activation. Heating of a solution of (Cp´Ru) 3 (m3-S) (m-H) 3 (4) in alkane exclusively gives a trinuclear m3-alkylidyne complex via a selective C-H bond cleavage at the less-hindered terminus of alkane molecule.

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Abernethy, Robyn J., Mark R. St J. Foreman, Anthony F. Hill, Matthew K. Smith, and Anthony C. Willis. "Relative hemilabilities of H2B(az)2 (az = pyrazolyl, dimethylpyrazolyl, methimazolyl) chelates in the complexes [M(η-C3H5)(CO)2{H2B(az)2}] (M = Mo, W)." Dalton Transactions 49, no. 3 (2020): 781–96. http://dx.doi.org/10.1039/c9dt03744f.

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The question of B–H–Mo hemilability in a range of dihydrobis(azolyl)borate scorpionate ligands is discussed with reference to η³-allyl complexes [Mo(η³-C₃H₅)(CO)₂{H₂B(az)₂}] [az = pyrazolyl (pz), dimethylpyrazolyl (pz*), mercaptoimidazolyl (mt)].

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Astuti, Maria Dewi, Ditya Kristina, Rodiansono Rodiansono, and Dwi Rasy Mujiyanti. "One-pot Selective Conversion of Biomass-derived Furfural into Cyclopentanone/Cyclopentanol over TiO2 Supported Bimetallic Ni-M (M = Co, Fe) Catalysts." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 1 (January 23, 2020): 231–41. http://dx.doi.org/10.9767/bcrec.15.1.6307.231-241.

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One-pot selective conversion of biomass-derived furfural (FFald) into cyclopentanone (CPO) or cyclopentanol (CPL) using bimetallic nickel-based supported on TiO2 (denoted as Ni-M(3.0)/TiO2; M = Co and Fe; 3.0 is Ni/M molar ratio) have been investigated. Catalysts were synthesized via a hydrothermal method at 150 °C for 24 h, followed by H2 reduction at 450 °C for 1.5 h. X-ray Diffraction (XRD) analysis showed that the formation of Ni-Co alloy phase at 2θ = 44.2° for Ni-Co(3.0)/TiO2 and Ni-Fe alloy at 2θ = 44.1° for Ni-Fe(3.0)/TiO2. The amount of acid sites was measured by using ammonia-temperature programmed desorption (NH3-TPD). Ni-Co(3.0)/TiO2 has three NH3 desorption peaks at 180 °C, 353 °C, and 569 °C with acid site amounts of 1.30 µmol.g-1, 1.0 µmol.g-1, and 2.0 µmol.g-1, respectively. On the other hand, Ni-Fe(3.0)/TiO2 consisted of NH3 desorption peaks at 214 °C and 626 °C with acid site amounts of 3.3 µmol.g-1and 2.0 µmol.g-1, respectively. Both Ni-Co(3.0)/TiO2 and Ni-Fe(3.0)/TiO2 catalysts were found to be active for the selective hydrogenation of FFald to furfuryl alcohol (FFalc) at low temperature of 110 °C, H2 3.0 MPa, 3 h with FFalc selectivity of 81.1% and 82.9%, respectively. High yields of CPO (27.2%) and CPL (41.0%) were achieved upon Ni-Fe(3.0)/TiO2 when the reaction temperature was increased to 170 °C, 3.0 MPa of H2, and a reaction time of 6 h. The yield of CPO+CPL on the reused catalyst decreased slightly after the second reaction run, but the activity was maintained for at least three consecutive runs. Copyright © 2020 BCREC Group. All rights reserved

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20

Hayour, Hasna, Abdelmalek Bouraiou, Sofiane Bouacida, Saida Benzerka, and Ali Belfaitah. "Crystal structure of ethyl 2-chloro-5,8-dimethoxyquinoline-3-carboxylate." Acta Crystallographica Section E Structure Reports Online 70, no. 9 (August 1, 2014): o964—o965. http://dx.doi.org/10.1107/s1600536814017309.

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In the title compound, C14H14ClNO4, the dihedral angle between the quinoline ring system (r.m.s. deviation = 0.0142 Å) and ester planes is 18.99 (3)°. The C—O—C—Cm(m = methyl) torsion angle is −172.08 (10)°, indicating atransconformation. In the crystal, the molecules are linked by C—H...O and C—H...N interactions, generating layers lying parallel to (101). Aromatic π-π stacking [centroid–centroid distances = 3.557 (2) and 3.703 (2)Å] links the layers into a three-dimensional network.

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21

Zordan, Fiorenzo, and Lee Brammer. "Water molecules insert into N—H...Cl—M hydrogen bonds while M—Cl...X—C halogen bonds remain intact in dihydrates of halopyridinium hexachloroplatinates." Acta Crystallographica Section B Structural Science 60, no. 5 (September 15, 2004): 512–19. http://dx.doi.org/10.1107/s0108768104016064.

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The crystal structures of the 3-halopyridinium hexachloroplatinate(IV) dihydrates (HPyX-3)2[PtCl6]·2H2O [(1), X = Br; (2a), (2b), X = I] comprise networks in which the molecular components are linked via N—H...O and O—H...Cl—Pt hydrogen bonds and Pt—Cl...X—C halogen bonds (X = Br, I). The iodo derivative has been isolated in two polymorphic forms. Of particular interest to the understanding of the utility of the hydrogen bonds and M—X...X′—C halogen bonds that propagate the networks in anhydrous salts of this type is that the water molecules insert exclusively into the putative N—H...Cl—Pt hydrogen bonds, while the Pt—Cl...X′—C halogen bonds remain undisrupted by the presence of water molecules.

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22

Chryssanthopoulos, Costas, Clyde Williams, Andrea Nowitz, Christina Kotsiopoulou, and Veronica Vleck. "The Effect of a High Carbohydrate Meal on Endurance Running Capacity." International Journal of Sport Nutrition and Exercise Metabolism 12, no. 2 (June 2002): 157–71. http://dx.doi.org/10.1123/ijsnem.12.2.157.

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This study examined the effects of a pre-exercise meal and a carbohydrate-electrolyte solution on endurance running capacity. Ten men performed 3 treadmill runs at 70% V̇O2max to exhaustion after consuming (a) a carbohydrate meal 3 h before exercise and a carbohydrate-electrolyte solution during exercise (M+C); or (b) the carbohydrate meal 3 h before exercise and water during exercise (M+W): or (c) a liquid placebo 3 h before exercise and water during exercise (P+W). Exercise time was longer in M+C (125.1 ±5.3 min; mean±SE) and M+W (111.9 ± 5.6 min) compared with P+W (102.9 ± 7.9 min;p< .01 and p < .05, respectively), and longer in M+C compared with M+W (p < .05). Serum insulin concentration at the start of exercise and carbohydrate oxidation rates during the first hour of exercise were higher, whereas plasma FFA concentrations throughout exercise were lower in M+W and M+C than in P+W (p < .01). A carbohydrate meal before exercise at 70% V̇O2max improved endurance running capacity; however, me combination of the meal and a carbohydrate-electrolyte solution during exercise further improved endurance running capacity.

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23

Robarts, Richard D., and Richard J. Wicks. "Heterotrophic Bacterial Production and Its Dependence on Autotrophic Production in a Hypertrophic African Reservoir." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 5 (May 1, 1990): 1027–37. http://dx.doi.org/10.1139/f90-117.

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The incorporation of [methyl-3H]thymidine (TdR) into bacterial DNA in Hartbeespoort Dam, South Africa was measured over 16 mo and at nine depths. Bacterial numbers at the surface ranged between 2.45 and 32.20 × 106 cells∙mL−1[Formula: see text] while bacterial production varied between 1.0 and 251 pmol TdR∙L−1∙h−1 (0.01 to 1.9 mg C∙m−3∙h−1). At the bottom, production ranged between 0 and 26.7 pmol TdR∙L−1∙h−1 (0–0.2 mg C∙m−3∙h−1). The fastest bacterial doubling time was 59 h. At the surface, bacterial production was dominantly correlated to chlorophyll a (6.6–6530 mg∙m−3) and phaeopigments (0.9–378 mg∙m−3) (r = 0.81) followed by primary production (26.6–8886 mg C∙m−3∙h−1) (r = 0.77) (n = 30–34, p < 0.001). However, below 5 m, water temperature and bacterial numbers were the dominant correlates. Bacterial production for the water column averaged 2% of daily, areal primary production. The data demonstrated a close coupling between autotrophic production and heterotrophic bacterial production. However, the low bacterial production compared with primary production, together with the small size of the bacteria (usually 0.09–0.25 μm width), suggest substrate supply was a major limiting factor of bacterial growth.

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24

Boonjaeng, Somsak, Kedsarin Pimraksa, Arnon Chaipanich, Sutin Kuharuangrong, and Prinya Chindaprasirt. "Thermal Activation on Phase Formation of Alkaline Activated Kaolin Based System." Advanced Materials Research 770 (September 2013): 262–66. http://dx.doi.org/10.4028/www.scientific.net/amr.770.262.

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The research aim was to investigate phase development after pozzolanic reaction between metakaolin (MK) and calcium hydroxide (CH) with alkaline and thermal activations. The CH to MK ratio (C/M) of 0.4 generating CaO/SiO2 of 1.18 was selected in this study. Various concentrations of NaOH solutions (0.01, 0.1, 1, 3, 5 and 10 M) were used. The alkali activated samples were thermally activated at 25 °C, 70 °C, 90 °C and 130 °C for 4 h. Phase development under thermal activation of alkali activated metakaolin based system were investigated. At every temperature, C/M mixtures with 0.01 and 0.1 M NaOH promoted the formations of poorly crystalline calcium silicate hydrate (C-S-H(I)) and calcium aluminosilicate hydrate (CASH) compounds. With 3 and 5 M NaOH activations, sodium aluminosilicate hydrate (NASH) and sodium calcium silicate hydrate (NCSH) was formed. 1 M NaOH was found to be a boundary of phase transformation from C-S-H(I) and CASH to NASH and NCSH. In addition, zeolite X and sodalite appeared when NaOH solution reached 10 M. Thermal activation significantly affected phase development at high concentration of alkaline activation (1-10 M). At 1 M NaOH, NASH compounds in a form of gmelinite and zeolite ZK-14 were found at 70-90 °C. At 3-5 M, katoite was found at 70-130 °C. At 10 M, zeolite X was found at 70-90 °C. Sodalite was also found at 130 °C with 10 M NaOH.

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25

Klute, F. D., A. Schütz, A. Michels, C. Vadla, D. Veza, V. Horvatic, and J. Franzke. "An experimental study on the influence of trace impurities on ionization of atmospheric noble gas dielectric barrier discharges." Analyst 141, no. 20 (2016): 5842–48. http://dx.doi.org/10.1039/c6an01352j.

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Penning Ionisation of N₂⁺ by collisions with of N₂ with He^M and [C₃H₈]⁺ by collisions of C₃H₈ with Ar^M.

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26

CAMPBELL, T. A. "CHEMICAL MUTAGENESIS IN TWO Cuphea SPECIES." Canadian Journal of Plant Science 67, no. 3 (July 1, 1987): 909–17. http://dx.doi.org/10.4141/cjps87-128.

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Presoaked (24 h at 20 °C) seeds of Cuphea tolucana Peyr. and C. wrightii A. Gray were treated with mutagens at 20 °C in two experiments. Experiment 1 treatments were: distilled water (DW), 0.05 M PO4 buffer (pH 7), 0.01 M ethyl methanesulfonate (EMS) (each applied for 8 h), 0.02 M EMS (applied for 4 h), 0.04 EMS M, 0.08 M EMS, or 0.16 M EMS (each applied for 2 h). Experiment 2 treatments were: DW, 0.1 M PO4 buffer (pH 3), 0.0005 M sodium azide (SA), 0.001 M SA, or 0.002 M SA (each applied for 2 h). None of the treatments had significant effects on emergence and height of M1 plants nor were any macro-mutations noted in the M2 generations. In a third experiment, DW, 0.04 M EMS, or 0.001 M SA were applied for 2 h at 30 °C to presoaked (48 or 72 h at 30 °C) seeds of C. tolucana and C. wrightii. Compared to EMS, SA had deleterious effects on height in the M1, emergence was better for C. tolucana than for C. wrightii, and C. wrightii plants grew taller after a 72-h pre-soak than after a 48-h presoak. M2 progenies were evaluated in the field. None of the presoak-treatment combinations increased variation significantly in several quantitative characters, no macro-mutations were detected in C. wrightii, but a fertile, small-leaved, decumbent mutant with very short internodes was noted in C. tolucana. Mutation rates were greatest for the 72 h presoak-EMS combination.Key words: Cuphea tolucana, Cuphea wrightii, ethyl methanesulfonate, sodium azide, medium-chain triglycerides, lauric acid

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27

Grobe, Joseph, Duc Le Van, and Jürgen Nientiedt. "Reaktive E = C (p—p) π -Systeme, XI. Hydrometallierungsreaktionen des Perfluor-2-phosphapropens F3CP = CF2/ Reactive E = C (p —p) π -Systems, XI. Hydrometallation Reactions of Perfluoro-2-phosphapropene F3CP = CF2." Zeitschrift für Naturforschung B 42, no. 8 (August 1, 1987): 984–92. http://dx.doi.org/10.1515/znb-1987-0810.

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AbstractThe reactions of F3CP = CF2 (1) with Me3GeH, Me3SnH, and (C5R5)(CO)3MH (M = Cr. Mo, W; R = H , Me) proceed via addition to the PC double bond yielding tertiary phosphanes of the type Me3M′P(CF3)CF2H[M′ = Ge (2), Sn (3)] or (C5R5)(CO)3MP(CF3)CF2H [R = H; M - Cr (6), Mo (7). W (8); R = Me; M = Mo (9), W (10)]. 2 and 3 are labile compounds, which decompose by elimination of Me3M′F , a reaction which in the case of 3 has been used to prepare the new phosphaalkene F3CP = C(H)F (5) and its [2+4]-cycloaddition product 4 with 2.3-dimethyl-1.3- butadiene. The H substituent (instead of F) in 5 and its derivatives has a surprising influence not only on the stability of the compounds but also on their spectroscopic data, as shown by com parison with 1 and derivatives of the type Me3M ′P(CF3)2 and (C5H5)(CO)3MP(CF3)2. respectively. New compounds are characterized by NMR, MS. GC/MS and IR measurements.

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28

Laghrib, Naoual, Mohamed Azrour, Jean-Claude Daran, Rachid Fihi, and Lhou Majidi. "(3SR,2′SR)-3-(2′-Anilino-2′-phenylethyl)phthalide." Acta Crystallographica Section E Structure Reports Online 63, no. 11 (October 17, 2007): o4333. http://dx.doi.org/10.1107/s1600536807050039.

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Evolution of the major spiroadduct obtained by cycloaddition of C,N-diphenylnitrone with 3-methylenephthalide in Zn/3 M HCl media gives a rearrangement product. The reaction did not stop at the formation of an aminoalcohol but was followed by dehydration; the title compound, C22H19NO2, was obtained after hydrogenation. It exists in the diastereoisomer SS/RR form. The packing is stabilized by weak N—H...O and C—H...O hydrogen-bond interactions.

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29

Li, Wei, Yanli Zeng, Xiaoyan Li, Zheng Sun, and Lingpeng Meng. "Insight into the pseudo π-hole interactions in the M3H6⋯(NCF)n (M = C, Si, Ge, Sn, Pb; n = 1, 2, 3) complexes." Physical Chemistry Chemical Physics 18, no. 35 (2016): 24672–80. http://dx.doi.org/10.1039/c6cp03713e.

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For cyclopropane and its derivatives M₃H₆ (M = C, Si, Ge, Sn, Pb), “pseudo π-hole” regions above and below the M–M–M three-membered ring have been discovered, and pseudo π-hole interactions between M₃H₆ and F–CN have been designed and investigated.

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30

Gallagher, John F., Steven Alley, and Alan J. Lough. "A structural systematic study of semi-rigid ferrocene derivatives as a 3 × 3 metallocene isomer grid: p -/ m -/ o -(FcC 6 H 4 )CONH( p -/ m -/ o -C 6 H 4 )CO 2 Et, [Fc = (η 5 -C 5 H 5 )Fe(η 5 -C 5 H 4 )]." Inorganica Chimica Acta 444 (April 2016): 113–25. http://dx.doi.org/10.1016/j.ica.2016.01.028.

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31

Mączka, M., A. Gągor, A. Pikul, and M. Trzebiatowska. "Vibrational and magnetic properties of [C 2 H 5 NH 3 ][Fe III M II (HCOO) 6 ] (M = Mn, Ni) and [C 2 H 5 NH 3 ][Cr III Mn II (HCOO) 6 ] framework compounds." Vibrational Spectroscopy 90 (May 2017): 74–80. http://dx.doi.org/10.1016/j.vibspec.2017.04.004.

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32

Li, Guo‐Ping, Si‐Qi Lu, Xin Chen, Wei‐Qiang Liao, Yuan‐Yuan Tang, and Ren‐Gen Xiong. "A Three‐Dimensional M 3 AB‐Type Hybrid Organic–Inorganic Antiperovskite Ferroelectric: [C 3 H 7 FN] 3 [SnCl 6 ]Cl." Chemistry – A European Journal 25, no. 72 (November 26, 2019): 16625–29. http://dx.doi.org/10.1002/chem.201903678.

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33

Sietzen, Malte, Sonja Batke, Patrick W. Antoni, Hubert Wadepohl, and Joachim Ballmann. "Benzylene-linked [PNP] scaffolds and their cyclometalated zirconium and hafnium complexes." Dalton Transactions 46, no. 18 (2017): 5816–34. http://dx.doi.org/10.1039/c7dt00413c.

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The benzylene-linked [PNP] ligands HN(CH₂-o-C₆H₄PPh₂)₂ and HN(C₆H₄-o-CH₂PPh₂)₂ were employed for the synthesis of the cyclometalated complexes κ⁴-[PNCP]Zr(η⁶-C₇H₈) and κ⁴-[PNCP]M(H)(κ³-Et₃BH) (M = Zr, Hf).

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34

Terai, Seiya, Yuki Sato, Takuya Kochi, and Fumitoshi Kakiuchi. "Efficient synthesis of 3,6,13,16-tetrasubstituted-tetrabenzo[a,d,j,m]coronenes by selective C–H/C–O arylations of anthraquinone derivatives." Beilstein Journal of Organic Chemistry 16 (March 31, 2020): 544–50. http://dx.doi.org/10.3762/bjoc.16.51.

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An efficient synthesis of tetrabenzo[a,d,j,m]coronene derivatives having alkyl and alkoxy substituents at the 3, 6, 13, and 16-positions was achieved based on the ruthenium-catalyzed coupling reactions of anthraquinone derivatives with arylboronates via C–H and C–O bond cleavage. The reaction sequence involving the arylation, carbonyl methylenation, and oxidative cyclization effectively provided various tetrabenzo[a,d,j,m]coronenes in short steps from readily available starting materials. Tetrabenzo[a,d,j,m]coronenes possessing two different types of substituents were obtained selectively by sequential chemoselective C–O arylation and C–H arylation. The 1H NMR spectra of the tetrabenzo[a,d,j,m]coronene product indicated its self-assembling behavior in CDCl3.

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35

Shibamoto, T., A. E. Taylor, and J. C. Parker. "PO2 modulation of paraquat-induced microvascular injury in isolated dog lungs." Journal of Applied Physiology 68, no. 5 (May 1, 1990): 2119–27. http://dx.doi.org/10.1152/jappl.1990.68.5.2119.

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We determined the effects of paraquat (PQ) concentrations ranging from 10(-3) to 10(-2) M and three levels of venous PO2 [hypoxia (41 +/- 3 Torr), normoxia (147 +/- 8 Torr), and hyperoxia (444 +/- 17 Torr)] in the presence of 4 x 10(-3) M PQ on microvascular permeability in isolated blood-perfused dog lungs. Capillary filtration coefficient (Kf,c) increased and isogravimetric capillary pressure (Pc,i) decreased 3 h after perfusion with 10(-2) M PQ (n = 7) and 5 h after perfusion with 4 x 10(-3) M PQ (n = 6) but not with 10(-3) M PQ (n = 4). In hyperoxic lungs perfused with 4 x 10(-3) M PQ, Kf,c increased to nine times the base-line value 5 h after PQ [0.15 +/- 0.01 to 1.35 +/- 0.25 (SE) ml.min-1.cmH2O-1.100 g-1]. Pc,i significantly decreased from a base-line value of 9.4 +/- 0.2 to 7.1 +/- 0.4 cmH2O at 3 h. In hypoxic lungs perfused with 4 x 10(-3) M PQ (n = 5), Pc,i and Kf,c changes were not significantly different from those in normoxic lungs treated with PQ. Thus both hyperoxia and an increased dose of PQ shortened the latent period and increased the severity of the PQ-induced microvascular permeability lesion, but hypoxia failed to prevent the PQ damage.

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Zhan, Chuantian, Zeyu Han, Brian O. Patrick, and Derek P. Gates. "2-Aminophenolate ligands for phosphorus(v): a lithium salt featuring the chiral [P(OC6H4NR)3]− anion." Dalton Transactions 47, no. 35 (2018): 12118–29. http://dx.doi.org/10.1039/c8dt02522c.

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The reaction of PCl₅ with 2-aminophenols affords phosphoranes, P(OC₆H₄NR)₂(OC₆H₄NHR) (R = Me, Ph, C₆F₅) which are precursors to M[P(OC₆H₄NR)₃] (M = Li or K).

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Sanchez-Perez, Clara, Caroline E. Knapp, Minna M. Karjalainen, Raija Oilunkaniemi, Claire J. Carmalt, and Risto S. Laitinen. "Macrocycles containing 1,1′-ferrocenyldiselenolato ligands on group 4 metallocenes." Dalton Transactions 47, no. 15 (2018): 5415–21. http://dx.doi.org/10.1039/c8dt00300a.

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Macrocyclic [Fe(η⁵-C₅H₄Se)₂M(η⁵-C₅H₄R)₂]₂ [M = Ti (1), Zr (2), Hf (3), R = H; and M = Zr (4), Hf (5), R = ^tBu] were prepared and characterized by ⁷⁷Se NMR spectroscopy and the crystal structures of 1–3 and 5 were determined by single-crystal X-ray diffraction.

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Constable, Edwin C., and Catherine E. Housecroft. "Halide Ion Embraces in Tris(2,2′-bipyridine)metal Complexes." Crystals 10, no. 8 (August 3, 2020): 671. http://dx.doi.org/10.3390/cryst10080671.

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An analysis of the [M(bpy)3]n+ (bpy = 2,2′-bipyridine) complexes with halide counterions in the Cambridge Structural Database reveals a common structural motif in two thirds of the compounds. This interaction involves the formation of 12 short C–H…X contacts between halide ions lying within sheets of the cations and H-3 and H-3′ of six [M(bpy)3]n+ complex cations. A second motif, also involving 12 short contacts, but with H-6 and H-5, is identified between halide ions lying between sheets of the [M(bpy)3]n+ cations.

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39

Feng, Jun-Ying, Yuan-Pern Lee, Chao-Yuan Zhu, Po-Jen Hsu, Jer-Lai Kuo, and Takayuki Ebata. "IR–VUV spectroscopy of pyridine dimers, trimers and pyridine–ammonia complexes in a supersonic jet." Physical Chemistry Chemical Physics 22, no. 37 (2020): 21520–34. http://dx.doi.org/10.1039/d0cp03197f.

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The infrared spectra of the C–H stretching vibrations of (pyridine)_m, m = 1–3, and the N–H stretching vibrations of (pyridine)_m–(NH₃)_n, m = 1, 2; n = 1–4, complexes were investigated by infrared (IR)–vacuum ultraviolet (VUV) spectroscopy under jet-cooled conditions.

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40

Hellén, H., H. Hakola, K. H. Pystynen, J. Rinne, and S. Haapanala. "C<sub>2</sub>-C<sub>10</sub> hydrocarbon emissions from a boreal wetland and forest floor." Biogeosciences 3, no. 2 (April 28, 2006): 167–74. http://dx.doi.org/10.5194/bg-3-167-2006.

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Abstract. Emissions of various C2-C10 hydrocarbons (VOCs) and halogenated hydrocarbons (VHOCs) from a boreal wetland and a Scots pine forest floor in south-western Finland were measured by the static chamber technique. Isoprene was the main non-methane hydrocarbon emitted by the wetland, but small emissions of ethene, propane, propene, 1-butene, 2-methylpropene, butane, pentane and hexane were also detected. The isoprene emission from the wetland was observed to follow the commonly-used isoprene emission algorithm. The mean emission potential of isoprene was 224 µg m-2 h-1 for the whole season. This is lower than the emission potentials published earlier; that is probably at least partly due to the cold and cloudy weather during the measurements. No emissions were detected of monoterpenes or halogenated hydrocarbons from the wetland. The highest hydrocarbon emissions from the Scots pine forest floor were measured in spring and autumn. However, only a few measurements were conducted during summer. The main compounds emitted were monoterpenes. Isoprene emissions were negligible. The total monoterpene emission rates varied from zero to 373 µg m-2 h-1. The results indicated that decaying plant litter may be the source for these emissions. Small emissions of chloroform (100-800 ng m-2 h-1), ethene, propane, propene, 2-methylpropene, cis-2-butene, pentane, hexane and heptane were detected. Comparison with Scots pine emissions showed that the forest floor may be an important monoterpene source, especially in spring.

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Li, Shengbin, Chunmei Tang, and Xue Zhang. "How will the benzyne group –C 6 H 4 affect the structure, electronic and optical properties of M 3 N@C 80 (M = Sc, Y)?" Computational and Theoretical Chemistry 1084 (May 2016): 17–24. http://dx.doi.org/10.1016/j.comptc.2016.03.019.

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Weber, Lothar, and Georg Meine. "Übergangsmetall-substituierte Diphosphene, VI [1]Zur Reaktivität von Diphosphenylkomplexen des Eisens und Rutheniums gegenüber Tetracarbonylnickel / Transition Metal Substituted Diphosphenes, VI [1] On the Reactivity of Diphosphenyl Complexes of Iron and Ruthenium towards Tetracarbonyl Nickel." Zeitschrift für Naturforschung B 42, no. 6 (June 1, 1987): 774–76. http://dx.doi.org/10.1515/znb-1987-0622.

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Abstract The diphosphenyl complexes (?/ 5 -CsMe0(CO 2)M-P = P-Ar (8) (M = Fe, Ru; Ar = 2,4,6-rm-BU,C 6 H 2) react with excess Ni(CO) 4 to yield the adducts (77 5 -C 5 Me 5)(CO) 2 M[Ni(CO) 3 ]P=PAr (9). The products have been characterized by elemental analysis as well as by spectroscopic data (IR. 'H, 13 C, 31 P NMR).

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43

Fischer, Helmut, and Siegfried Zeuner. "η1/η2-Isomerie bei Pentacarbonyl(thiobenzaldehyd)-Komplexen von Chrom und Wolfram." Zeitschrift für Naturforschung B 40, no. 7 (July 1, 1985): 954–60. http://dx.doi.org/10.1515/znb-1985-0718.

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Abstract The benzylidene(pentacarbonyl) complexes of chromium and tungsten (CO)5M = C(H)R [M = Cr, R = C6H4OMe-P (2a); M = W, R = Ph (2b), C6H4CF3-p (2c)] react with SCN- inserting sulfur into the M = C bond to give (CO)5M[S = C(H)R] (3a-c). From the reaction of (CO5W=C(H)R [R = Ph (2h), 2,4,A-C6H2Me3 (2d), C6H4Me-p (2e)] with S8 in CH2Cl2 the thiobenzaldehyde complexes (CO)5W[S=C(H)R] (3b, d, e) are obtained. In 3a and 3d the thiobenzaldehyde ligand is η1-bonded. However, a dynamic equilibrium between the η1- and the η2-isomeric forms is observed for the complexes 3b, 3c and 3e. The equilibrium constant is dependent on the aryl group, the solvent and the temperature. In hexane the η2-isomer is favored by its lower enthalpy. Because of the small but positive entropy of the reaction η2-3→η1-3, increasing temperatures shift the equilibrium towards the η1-isomer.

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44

Aydin, Abdullah, Mehmet Akkurt, Zehra Tugce Gur, and Erden Banoglu. "Crystal structure and Hirshfeld surface analysis of methyl 1-(2,4-dichlorobenzyl)-5-methyl-1H-pyrazole-3-carboxylate." European Journal of Chemistry 9, no. 4 (December 31, 2018): 347–52. http://dx.doi.org/10.5155/eurjchem.9.4.347-352.1782.

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The title compound, C13H12Cl2N2O2, crystallizes with six molecules in the asymmetric unit, such that, the 1H-pyrazole rings are essentially planar. The six molecules are stabilized by intramolecular C-H···N and C-H···Cl interactions and the crystal structure is stabilized by intermolecular C-H···O hydrogen bonds, forming molecular sheets into paralel to the (-1 1 0) plane. These sheets are connected to each other by C-H···O hydrogen bonds and C-H···π interactions. In the Hirshfeld surface analysis, the H···H, Cl···H/H···Cl, C···H/H···C, O···H/H···O, N···H/H···N, Cl···Cl, Cl···O/O···Cl interactions add to 95.8% of the intermolecular contacts of the Hirshfeld surface area. The remaining contributions (2.9%) correspond to Cl···C/C···Cl, C···O/O···C, O···O and N···N interactions. Crystal Data for C13H12Cl2N2O2 (M = 299.15 g/mol): Triclinic, space group P-1 (no. 2), a = 12.0505(10) Å, b = 12.3189(11) Å, c = 29.184(3) Å, α = 88.565(4)°, β = 89.296(4)°, γ = 76.833(4)°, V = 4217.0(7) Å3, Z = 12, T = 296(2) K, μ(MoKα) = 0.460 mm-1, Dcalc = 1.414 g/cm3, 83073 reflections measured (2.8° ≤ 2Θ ≤ 47°), 12426 unique (Rint = 0.0411, Rsigma = 0.0235) which were used in all calculations. The final R1 was 0.0662 (I > 2σ(I)) and wR2 was 0.2481 (all data).

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Ying-Chun, Li, Yang Chuan-Lu, Sun Mei-Yu, Li Xiao-Xia, An Yi-Peng, and Wang Mei-Shan. "Geometrical, energetic and electronic properties of Au n –(C 3 H 6 O) m complexes ( n = 3, 5, m ≤ n ): A density functional theory study." Chinese Physics B 19, no. 8 (August 2010): 083602. http://dx.doi.org/10.1088/1674-1056/19/8/083602.

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Harvey, Miguel Angel, Sergio Baggio, María Teresa Garland, and Ricardo Baggio. "Weak C - H…O Interactions Leading to Measurable Effects in Polymeric Sulfates [M(SO4)L(H2O)2]n (M = Cd, Zn, Cu; L = bipy, phen, dmp)." Australian Journal of Chemistry 56, no. 11 (2003): 1161. http://dx.doi.org/10.1071/ch03069.

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The structure of two sulfate complexes, [Zn(SO4)phen(H2O)2]n and [Cd(SO4)bipy(H2O)2]n, are presented. They are polymeric and isomorphous to an homologous series already reported, namely [Zn(SO4)bipy(H2O)2]n, [Cd(SO4)dmph(H2O)2]n, [Cu(SO4)bipy(H2O)2]n, and [Cu(SO4)phen(H2O)2]n (bipy = 2,2′-bipyridine, phen = 1,10-phenanthroline, dmp = 2,9-dimethyl-1,10-phenanthroline). The compounds organize into double polymeric chains internally linked through strong (O–H)water…Osulfate bonds. The interaction between these ‘strips’ is governed by weak (C–H)ligand…Osulfate bonds, which explain a seemingly abnormal expansion/contraction of some cell parameters in the homologous series. Both compounds are monoclinic, C2/c. [Zn(SO4)phen(H2O)2]n: a 15.156(3), b 14.152(3), c 6.7010(13) Å, β 103.43(3)°, V 1398.0(5) Å3, Z 4, conventional R (on F) being 0.028 for No 1615 observed reflections (I >2σ(I)). [Cd(SO4)bipy(H2O)2]n: a 15.705(3), b 13.049(3), c 6.8912(14) Å, β 104.59(3)°, V 1366.7(5) Å3, Z 4, R 0.052, No 1516.

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Yeyati, E. Levy. "Ghosh, A. R., Gulde, A.-M., and Wolf, H. C.: Exchange Rate Regimes – Choices and Consequences." Journal of Economics 82, no. 2 (June 2004): 204–7. http://dx.doi.org/10.1007/s00712-003-0057-3.

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48

Verdugo-Díaz, G., R. Cervantes Duarte, and M. O. Albáñez-Lucero. "ESTIMACIÓN DE LA PRODUCTIVIDAD PRIMARIA EN DOS BAJOS DE LA PARTE SUR DEL GOLFO DE CALIFORNIA, MÉXICO." CICIMAR Oceánides 23, no. 1-2 (December 31, 2008): 39. http://dx.doi.org/10.37543/oceanides.v23i1-2.43.

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Primary productivity estimation in two seamounts in the southern Gulf of California, México Vertical profiles of temperature and natural fluorescence from 100 m deep were made during February 2005. Water transparency was measured using Secchi’s disc, as well samples of superficial water and at maximum of fluorescence deep were collected to analyze inorganic nutrients. In “El Bajo Espiritu Santo” temperature (20 °C at surface) diminished gradually with depth, without significant stratification.Primary productivity shows superficial values close to 6 mg C m-3 h-1, recahing undetectable values at 20 m of depth. In “El Bajo Gorda” surface temperature reached 22 °C and the water column shows a thermocline between 35 m and 45 m of depth. The profiles of primary productivity presented a subsurface maximum (approximately 2 mg C m-3 h-1) associated with the thermocline.

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49

Verdugo-Díaz, G., R. Cervantes Duarte, and M. O. Albáñez-Lucero. "ESTIMACIÓN DE LA PRODUCTIVIDAD PRIMARIA EN DOS BAJOS DE LA PARTE SUR DEL GOLFO DE CALIFORNIA, MÉXICO." CICIMAR Oceánides 23, no. 1-2 (December 31, 2008): 39. http://dx.doi.org/10.37543/oceanides.v23i1-2.43.

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Abstract:

Primary productivity estimation in two seamounts in the southern Gulf of California, México Vertical profiles of temperature and natural fluorescence from 100 m deep were made during February 2005. Water transparency was measured using Secchi’s disc, as well samples of superficial water and at maximum of fluorescence deep were collected to analyze inorganic nutrients. In “El Bajo Espiritu Santo” temperature (20 °C at surface) diminished gradually with depth, without significant stratification.Primary productivity shows superficial values close to 6 mg C m-3 h-1, recahing undetectable values at 20 m of depth. In “El Bajo Gorda” surface temperature reached 22 °C and the water column shows a thermocline between 35 m and 45 m of depth. The profiles of primary productivity presented a subsurface maximum (approximately 2 mg C m-3 h-1) associated with the thermocline.

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BUDZICHOWSKI, T. A., S. T. CHACON, M. H. CHISHOLM, F. J. FEHER, and W. STREIB. "ChemInform Abstract: Dimolybdenum and Ditungsten Derivatives of the Trisilanol ((c-C6H11) 7Si7O9(OH)3): ((c-C6H11)7Si7O12)2Mo2 (MM) and ((c-C6H11) 7Si7O12)2W2(μ-H)(O-tBu)." ChemInform 22, no. 20 (August 23, 2010): no. http://dx.doi.org/10.1002/chin.199120235.

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