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Journal articles on the topic 'Pentane-2'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Meisehen, T., F. Bühler, R. Koppmann, and M. Krebsbach. "An analytical system for the measurement of stable hydrogen isotopes in ambient volatile organic compounds." Atmospheric Measurement Techniques 8, no. 10 (2015): 4475–86. http://dx.doi.org/10.5194/amt-8-4475-2015.

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Abstract. Stable isotope measurements in atmospheric volatile organic compounds (VOCs) are an excellent tool to analyse chemical and dynamical processes in the atmosphere. While up to now isotope studies of VOCs in ambient air have mainly focussed on carbon isotopes, we herein present a new measurement system to investigate hydrogen isotope ratios in atmospheric VOCs. This system, consisting of a gas chromatography pyrolysis isotope ratio mass spectrometer (GC-P-IRMS) and a pre-concentration system, was thoroughly characterised using a VOC test mixture. A precision of better than 9 ‰ (in δ 2H)

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2

Meisehen, T., F. Bühler, R. Koppmann, and M. Krebsbach. "An analytical system for the measurement of stable hydrogen isotopes in ambient volatile organic compounds." Atmospheric Measurement Techniques Discussions 8, no. 7 (2015): 7093–125. http://dx.doi.org/10.5194/amtd-8-7093-2015.

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Abstract. Stable isotope measurements in atmospheric volatile organic compounds (VOC) are an excellent tool to analyse chemical and dynamical processes in the atmosphere. While up to now isotope studies of VOC in ambient air mainly focus on carbon isotopes, we herein present a new measurement system to investigate hydrogen isotope ratios in atmospheric VOC. This system consisting of a GC-P-IRMS (Gas Chromatography Pyrolysis Isotope Ratio Mass Spectrometer) and a preconcentration system was thoroughly characterised using a working standard. A precision of better than 9 ‰ (in δD) is achieved for

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3

Rammo, Andreas, Iulia Bejan, Antje Meltzer, Krzysztof Radacki, Holger Braunschweig, and David Scheschkewitz. "1,2-Disilabicyclo[1.1.1]pentan-4-ones from a Disilenide and Acryloyl Chlorides." Australian Journal of Chemistry 66, no. 10 (2013): 1311. http://dx.doi.org/10.1071/ch13265.

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Reactions of a disilenide, a disila analogue of vinyl lithiums, with two α,β-unsaturated carboxylic acid chlorides yield the first examples of compounds with a bicyclo[1.1.1]pentane scaffold that feature one carbon and one silicon atom at bridgehead positions; the formation of 1,2-disilabicyclo[1.1.1]pentan-4-ones is explained with initial nucleophilic substitution at the carbonyl C-atom by the nucleophilic disilenide and subsequent intramolecular [2+2]-cycloaddition of the Si=Si to the C=C double bond in a highly diastereoselective fashion.

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4

Halz, Jan Henrik, Andreas Hentsch, Christoph Wagner, and Kurt Merzweiler. "Synthesis and crystal structures of three Schiff bases derived from 3-formylacetylacetone and o-, m- and p-aminobenzoic acid." Acta Crystallographica Section E Crystallographic Communications 78, no. 1 (2022): 54–59. http://dx.doi.org/10.1107/s2056989021013050.

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Treatment of 3-formylacetylacetone with the isomeric o-, m- and p-aminobenzoic acids led to the formation of the corresponding Schiff bases, namely, 3-[(2-carboxyphenylamino)methylidene]pentane-2,4-dione, 1, 3-[(3-carboxyphenylamino)methylidene]pentane-2,4-dione, 2, and 3-[(4-carboxyphenylamino)methylidene]pentane-2,4-dione, 3, all C13H13NO4, that contain a planar amino-methylene-pentane-2,4-dione core with a strong intramolecular N—H...O hydrogen bridge. The carboxyphenyl groups attached to the nitrogen atom are almost coplanar to the central molecular fragment. Depending on the position of t

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5

M'hamedi, Ahmed, and Andrei S. Batsanov. "Phosphorescent mono- and diiridium(III) complexes cyclometalated by fluorenyl- or phenyl-pyridino ligands with bulky substituents, as prospective OLED dopants." Acta Crystallographica Section E Crystallographic Communications 76, no. 3 (2020): 392–99. http://dx.doi.org/10.1107/s2056989020001784.

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The crystal structures of tris[9,9-dihexyl-2-(5-methoxypyridin-2-yl-κN)-9H-fluoren-3-yl-κC 3]iridium pentane monosolvate, [Ir(C31H38NO)3]·C5H12, (I), di-μ2-chlorido-bis{bis[2-(5-fluoropyridin-2-yl)-9,9-dihexyl-9H-fluoren-3-yl]iridium} pentane 0.3-solvate, [Ir2(C30H35FN)4Cl2]·0.3C5H12, (II), di-μ2-cyanato-bis{bis[9,9-dihexyl-2-(5-methoxypyridin-2-yl)-9H-fluoren-1-yl]iridium} pentane monosolvate, [Ir2(C31H38NO)4(NCO)2(NCO)2]·C5H12, (III), and {μ-N,N′-bis[3,5-bis(trifluoromethyl)phenyl]oxamidato}bis(bis{2-[4-(2,4,6-trimethylphenyl)pyridin-2-yl]phenyl-κ2 C 1,N′}iridium)–chlorobenzene–pentane (1/2.

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Császár, Z., G. Farkas, A. Bényei, G. Lendvay, I. Tóth, and J. Bakos. "Stereoselective coordination: a six-membered P,N-chelate tailored for asymmetric allylic alkylation." Dalton Transactions 44, no. 37 (2015): 16352–60. http://dx.doi.org/10.1039/c5dt02750k.

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Six-membered chelate complexes [Pd(1a–b)Cl<sub>2</sub>], (2a–b) and [Pd(1a–b)(η<sup>3</sup>-PhCHCHCHPh)]BF<sub>4</sub>, (3a–b) of P,N-type ligands 1a, ((2S,4S)-2-diphenyl-phosphino-4-isopropylamino-pentane) and 1b, ((2S,4S)-2-diphenyl-phosphino-4-methylamino-pentane) have been prepared.

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7

Harrison, William T. A., M. John Plater, Ben M. deSilva deSilva, and Mark R. St J. Foreman. "Crystal structure of a layered coordination polymer based on a 44net containing Cd2+ions and 1,5-bis(pyridin-4-yl)pentane linkers." Acta Crystallographica Section E Structure Reports Online 70, no. 8 (2014): 80–83. http://dx.doi.org/10.1107/s1600536814014779.

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The title compound, poly[[diaquabis[1,5-bis(pyridin-4-yl)pentane-κ2N:N′]cadmium] bis(perchlorate) 1,5-bis(pyridin-4-yl)pentane ethanol monosolvate], [Cd(C15H18N2)2(H2O)2](ClO4)2·C15H18N2·C2H6O, is a layered coordination polymer built up from highly squashed 44nets in which the octahedraltrans-CdO2N4nodes (Cd site symmetry -1) are linked by the bifunctional ligands, forming infinite (110) sheets. The cationic sheets are charge-balanced by interlayer perchlorate ions. A free 1,5-bis(pyridin-4-yl)pentane molecule and an ethanol molecule of crystallization are also found in the intersheet region.

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8

Walker, Valerie, and Graham A. Mills. "2-Pentanone Production from Hexanoic Acid byPenicillium roquefortifrom Blue Cheese: Is This the Pathway Used in Humans?" Scientific World Journal 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/215783.

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Production of 2-pentanone, a methylketone, is increased in fasting ketotic humans. Its origin is unknown. We hypothesised that it is formed viaβ-oxidation of hexanoic acid by the peroxisomal pathway proposed for methylketone-producing fungi and yeasts. We usedPenicillium roqueforticultured on fat (margarine) to investigate 2-pentanone production. Headspace gas of incubates of the mould with a range of substrates was analysed using solid-phase microextraction with gas chromatography-mass spectrometry. Consistent with the proposed pathway, 2-pentanone was formed from hexanoic acid, hexanoyl-CoA,

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9

Shi, Lu, Zong Jian Liu, Qun Cui, Hai Yan Wang, and Hu Qing Yao. "Effect of Macropore Structure on Desorption Diffusion Performance of N-Pentane on 5A Zeolite." Advanced Materials Research 634-638 (January 2013): 731–35. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.731.

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Desorption rate curves of n-pentane on 5A zeolites at 418 K and 10-0.03 kPa were determined, and the effects of different macropore structure on desorption performance were analyzed. Results show that macropore distribution of 5A-1 concentrates in 0.25-1.25 μm, while that of 5A-2 ranges from mesopore category to 0.3 μm, but 5A-3 contains both pores of 0.01-0.1 μm and 0.2-2 μm inside, reflecting a broadest distribution; 5A-3, 5A-1 and 5A-2 reach desorption equilibrium after 1100 s, 1400 s and 2000 s respectively at 0.03 kPa, indicating that abundant macropores make n-pentane fastest desorbed fr

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10

Andrews, Gerald D., and John E. Baldwin. "Thermal isomerizations of 2-methylenebicyclo[2.1.0]pentane." Journal of Organic Chemistry 53, no. 19 (1988): 4624–26. http://dx.doi.org/10.1021/jo00254a051.

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11

Tang, Wai Hong Wilson, Lily Tranchito, Chonyang Albert, et al. "Exhaled Breath Analysis Using Selected Ion Flow Tube Mass Spectrometry and Disease Severity in Heart Failure." Metabolites 13, no. 10 (2023): 1049. http://dx.doi.org/10.3390/metabo13101049.

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Background: Exhaled breath volatile organic compounds (VOCs) are elevated in heart failure (HF). The ability of VOCs to predict long term cardiovascular mortality and morbidity has not been independently verified. Methods: In 55 patients admitted with acute decompensated heart failure (ADHF), we measured exhaled breath acetone and pentane levels upon admission and after 48 h of diuresis. In a separate cohort of 51 cardiac patients undergoing cardiopulmonary exercise testing (CPET), we measured exhaled breath acetone and pentane levels before and at peak exercise. Results: In the ADHF cohort, a

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12

Pillière, H., M. Goldmann, and F. Béguin. "Intercalation of pentane into the stage 2 to 4 cesium graphitides: Relation between cesium density in the intercalated layers and the stage of the parent binary." Journal of Materials Research 8, no. 9 (1993): 2288–98. http://dx.doi.org/10.1557/jmr.1993.2288.

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Isotherms (at 300 K and 328 K) and isobars (in the range 300 to 400 K) of n-pentane intercalation in CsC24 and CsC36 were established. With CsC24, three plateaus were identified at 0.52, 0.7, and 1.0 n-pentane/24 C, whereas only two plateaus at 0.8 and 0.97 n-pentane/36 C were found with CsC36. The progress of the reaction between n-pentane and CsC24, CsC36, and CsC56 (stage 2 to 4) was monitored by real-time neutron diffraction. The intercalation of n-pentane in CsC24 results in the simultaneous formation of a second stage ternary and a first stage binary “CsC8”, whereas, from the third stage

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13

Thirumoorthi, Navanita T., and Vikrant A. Adsool. "A practical metal-free homolytic aromatic alkylation protocol for the synthesis of 3-(pyrazin-2-yl)bicyclo[1.1.1]pentane-1-carboxylic acid." Organic & Biomolecular Chemistry 14, no. 40 (2016): 9485–89. http://dx.doi.org/10.1039/c6ob01799a.

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As a part of our ongoing synthetic quest to expand the frontiers of contemporary medicinal chemistry, we now report an expedient synthesis of a potentially useful bicyclo[1.1.1]pentane building block, 3-(pyrazin-2-yl)bicyclo[1.1.1]pentane-1-carboxylic acid. This report also showcases the application of this motif as a “spacer” probe in a biological study.

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14

Hahn, Josef, and Klaus Altenbach. "Bis(methvldiphenvlsilvl)-sulfane: Ausgangsverbindungen zur Darstellung von Sulfanen H2Sn und D2Sn mit definierter Kettenlänge / Bis(methyldiphenylsilyl)-sulfanes: Starting Compounds for the Preparation of Sulfanes H2Sn and D2Sn of Definite Chain Length." Zeitschrift für Naturforschung B 41, no. 6 (1986): 675–79. http://dx.doi.org/10.1515/znb-1986-0603.

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The silylsulfanes (MePh2Si)2Sn, n = 2-5 (1a-d). have been prepared by reacting MePh2SiSNa (2) with iodine or chlorosulfanes SmCl2, m = 1−3. in toluene solution. Compounds 1a-d, which can unambiguously be characterized by their 1H and 29Si chemical shifts, are obtained pure when crystallized from solutions in pentane or pentane/CS2. They proved a convenient source for the generation of sulfanes H2Sn and deuterosulfanes D2Sn of definite chain length n = 2-5. Mixtures of the silylated sulfanes (MePh2Si)2Sn, n = 1−10. are formed on heating 2 with an excess of cyclooctasulfur.

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15

Nofrizal, Nofrizal, Lisna Rosmayati, and Yayun Andriani. "A Rapid Gas Chromatography Method For Simultaneous Determination Of Lpg Compounds." Scientific Contributions Oil and Gas 36, no. 3 (2022): 145–51. http://dx.doi.org/10.29017/scog.36.3.772.

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A rapid gas chromatography method using a HP Plot/Al2O3 column for the determination of thirteen compounds of LPG (Liquefied Petroleum Gas) standard (ethane, propane, propylene, iso-butane, n-butane, trans-2-butene, 1-butene, isobutylene, neo-pentane, cis-2-butene, iso-pentane, n-pentane, 1,3 butadiene) was developed. The LPG components were separated in about 8 min by gradient elution program and helium was used as a carrier gas at a flow rate of 5 mL min-1, The relative standard deviation (RSD) for the LPG standard concentration were found to range between 0.27-1.91 % . The method had been a

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16

Huang, Xian-Qiang, Hui Wang, Jian-Min Dou, Da-Qi Wang, and Jin-Xian Wang. "1,5-Diphenyl-3-(2-thienyl)pentane-1,5-dione." Acta Crystallographica Section E Structure Reports Online 62, no. 9 (2006): o4020—o4021. http://dx.doi.org/10.1107/s1600536806032429.

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17

Simon, K., V. Harmat, Z. Török, Z. Böcskei, and I. Hermecz. "1-Phenyl-2-(propylamino)pentane, a Memory Enhancer." Acta Crystallographica Section C Crystal Structure Communications 52, no. 8 (1996): 2090–92. http://dx.doi.org/10.1107/s0108270196005148.

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18

Pospieszna-Markiewicz, Izabela, Michał Kozłowski, Wanda Radecka-Paryzek, and Maciej Kubicki. "N,N′-Bis(2-hydroxybenzylidene)pentane-1,5-diamine." Acta Crystallographica Section C Crystal Structure Communications 63, no. 9 (2007): o559—o561. http://dx.doi.org/10.1107/s0108270107037900.

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19

Huang, Xian-Qiang, Da-Qi Wang, Jian-Min Dou, and Jin-Xian Wang. "1,5-Diphenyl-3-(2-pyridyl)pentane-1,5-dione." Acta Crystallographica Section E Structure Reports Online 62, no. 1 (2005): o60—o61. http://dx.doi.org/10.1107/s1600536805040080.

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20

Odabaşoğlu, Mustafa, Orhan Büyükgüngör, B. K. Sarojini, and B. Narayana. "3-{[2-(Trifluoromethyl)phenyl]hydrazono}pentane-2,4-dione." Acta Crystallographica Section E Structure Reports Online 63, no. 10 (2007): o4135—o4136. http://dx.doi.org/10.1107/s1600536807045631.

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21

Zvidzai, C. J., C. Chidewe, and R. Musundire. "PRELIMINARY CHEMICAL ANALYSIS OF EXTRACTS FROM ENCOSTERNUM DELEGORGUEI USING GAS CHROMATOGRAPHY MASS SPECTROSCOPY." Journal of Biopesticides 06, no. 02 (2013): 211–18. http://dx.doi.org/10.57182/jbiopestic.6.2.211-218.

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ABSTRACT The methanol extract of Encosternum delegorguei was quantitively analyzed through GCMS which had plasma-ionization detector (PID), quartz capillary column ZВ-5 (polydimethylsyloxane, 5 % of phenyl groups), identified and produced the following 18 compounds which were C2-C13 aliphatic hydrocarbons, aldehydes, furanones, aromatic, oxo-alkenals, esters, ketones, lactones and ethers. The compounds were identified as 2-hexenal, 1-methylbutyl formate, 3-methyl-3-heptanol, octenal, 2,4- dimethyl-3-heptanol, 1,1-diethoxy butane, tridecane, 6-trideceny-4-ne, 4,6-nonadien-8-yn-3-ol, 4,5- dimeth

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22

Zieliński, Marek, Ewa Twardowska, and Małgorzata Kucharska. "Pentane-1-ol and its isomers. Determination in workplace air with GC with Flame Ionization Detector (GC-FID)." Podstawy i Metody Oceny Środowiska Pracy 35, no. 1(99) (2019): 75–88. http://dx.doi.org/10.5604/01.3001.0013.0807.

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Amyl alcohol (pentan-1-ol) – C5H12O or C5H11OH – is an organic chemical compound from the group of saturated monohydric aliphatic alcohols. There are 8 known isomers of pentanol: pentan-1-ol (CAS:71-41-0), pentan-2-ol (CAS: 6032-29-7), pentan-3-ol (CAS: 584-02-1), 2-metylobutan-1-ol (CAS: 137-32-6), 3-metylobutan-1-ol (CAS: 123-51-3), 2-metylobutan-2-ol (CAS: 75-85-4), 3-metylobutan-2-ol (CAS: 598-75-4) i 2,2-dimetylopropan-1-ol (CAS: 75-84-3). All of them are commonly referred to as amyl alcohols. Pentanol isomers exhibit chemical properties characteristic of aliphatic alcohols, they are obta

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23

Wang, Tao Feng, Ting Xiao, Wei Jun Liu, and Gang Liu. "Synthesis of a Novel Photochromic Diarylethene and its Application in Optical Recording Storage." Advanced Materials Research 393-395 (November 2011): 366–69. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.366.

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A novel unsymmetrical photochromic diarylethene compound bearing dithiol-pentane unit, 1-[2-methyl-5-(1,3-dithiol-pentane)-3-thienyl]-2-[2-methyl-3-benzofuran-yl]perfluoroyclopentene(1a) has been synthesized, and its photochromic, fluorescence and optical recording strorage properties were investigated. The compound exhibited remarkable photochromism and clear fluorescent switches both in solution and in PMMA film. Using diarylethene 1b/PMMA film as recording medium and a linearly polarized 650 nm laser diode for recording and readout, polarization multiplexed image recording can be carried ou

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24

Bassols, Fredy, and Edouard P. Demole. "The Occurrence of Pentane-2-Thiol in Guava Fruit." Journal of Essential Oil Research 6, no. 5 (1994): 481–83. http://dx.doi.org/10.1080/10412905.1994.9698430.

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25

BURCAT, ALEXANDER, ERNA OLCHANSKI, and CHARA SOKOLINSKI. "2-Methyl-Pentane Ignition Kinetics in a Shock-Tube." Combustion Science and Technology 147, no. 1-6 (1999): 1–37. http://dx.doi.org/10.1080/00102209908924210.

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Rumyantsev, A. N., and �. Yu Oganesova. "Mechanism of pyrolysis of n-alkanes 2. n-pentane." Chemistry and Technology of Fuels and Oils 23, no. 2 (1987): 85–88. http://dx.doi.org/10.1007/bf00725754.

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Rosalina, Askal Maimulyanti, Anita Herawati Permana, Maman Sukiman, Henny Rochaeny, and Nurdiani. "BIOETHANOL PRODUCTION USING TARO ROOTS WASTE (Colocasia esculenta) FROM BOGOR INDONESIA AND ANALYSIS OF CHEMICAL COMPOUNDS." RASAYAN Journal of Chemistry 15, no. 02 (2022): 870–74. http://dx.doi.org/10.31788/rjc.2022.1526575.

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Taro roots waste (Colocasia esculenta) was considered a starch material for the preparation of bioethanol. Conversion of starch into ethanol was conducted by enzymatic hydrolysis followed by fermentation. The hydrolysis process uses the catalyst of HCl 15% (1:10) at 100 oC for 2.5 hours and fermentation using Saccharomyces cerevisiae. The chemical composition was analyzed by using chromatography gas-mass spectrophotometry (GCMS). The active component of bioethanol was found as ethanol (41.14%) and glycerol (29.08 %). The other chemical compound were 2,3- dimethyloxirane, pentanal, propionic ac

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Yang, Xuelian, Zhaoyang Pei, Wenbin Du, and Jianchun Xie. "Characterization of Volatile Flavor Compounds in Dry-Rendered Beef Fat by Different Solvent-Assisted Flavor Evaporation (SAFE) Combined with GC–MS, GC–O, and OAV." Foods 12, no. 17 (2023): 3162. http://dx.doi.org/10.3390/foods12173162.

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To comprehensively understand the volatile flavor composition of dry-rendered beef fat, solvent-assisted flavor evaporation (SAFE) with four extraction solvents (dichloromethane, pentane, ethyl ether, and methanol) combined with gas chromatography–mass spectrometry (GC–MS) and gas chromatography–olfactormetry (GC–O) were performed. GC–MS analysis found 96 different volatile compounds in total using the four extraction solvents. According to the GC–MS results and the heat map and principal component analysis (PCA), most of the volatile compounds resulted from dichloromethane and pentane extract

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Krishna, Rajamani, and Jasper M. van Baten. "Screening metal–organic frameworks for separation of pentane isomers." Physical Chemistry Chemical Physics 19, no. 12 (2017): 8380–87. http://dx.doi.org/10.1039/c7cp00586e.

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Mazur, M. "Polymerization of 2-methylaniline and 2-methoxyaniline in water/pentane biphasic system." European Physical Journal E 22, no. 1 (2007): 67–75. http://dx.doi.org/10.1140/epje/e2007-00012-3.

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Park, Ki-Min, та Youngjin Kang. "Crystal structure of bis[2-tert-butoxy-6-fluoro-3-(pyridin-2-yl-κN)pyridin-4-yl-κC4](pentane-2,4-dionato-κ2O,O′)iridium(III)". Acta Crystallographica Section E Structure Reports Online 70, № 11 (2014): 427–29. http://dx.doi.org/10.1107/s1600536814022934.

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The title molecule, [Ir(C14H14FN2O)2(C5H7O2)], is located on a twofold rotation axis, which passes through the IrIIIatom and the central C atom of the pentane-2,4-dionate anion. The IrIIIatom adopts a distorted octahedral coordination geometry, beingC,N-chelated by two 2-tert-butoxy-6-fluoro-3-(pyridin-2-yl)pyridin-4-yl ligands andO,O′-chelated by the pentane-2,4-dionato ligand. The bipyridinate ligands, which are perpendicular to each other [dihedral angle between the two least-squares planes = 89.95 (5)°], are arranged in acis-C,C′andtrans-N,N′fashion relative to the central metal cation. In

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32

Nutranta, Ruli, Idrus Al Hamid, Nasruddin, and B. Harinaldi. "Simulation of Solar Organic Rankine Cycle System Using Turbocharger with Cycle Tempo and Environmentally Friendly Fluid." Applied Mechanics and Materials 388 (August 2013): 13–17. http://dx.doi.org/10.4028/www.scientific.net/amm.388.13.

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Organic Rankine cycle (ORC) is a modified rankine cycle with working fluids, of organic material (Refrigerant). Refrigerant pentane has low boiling point, therefore ORC can be used in power plant which uses low temperature resources, such as solar thermal exhausted gases and geothermal wells. Organic Rankine Cycle (ORC) is used to convert heat energy into mechanical energy or electricity generated by a low temperature of the hot sun. The working fluid used is HCR12, HCR22, HCR134a and Pentane. Simulations performed with an organic Rankine cycle temperature and pressure with cycle tempo program

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Brown, SJ, SKC Kok, PA Lay, and AF Masters. "Electrochemical Behavior of Bis[pentane-2,4-dithionato(1-)]iron(II), Fe(sacsac)2, and Dicarbonylbis[pentane-2,4-dithionato(1-)]iron(II), Fe(sacsac)2(CO)2." Australian Journal of Chemistry 42, no. 11 (1989): 1839. http://dx.doi.org/10.1071/ch9891839.

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The redox behaviours of Fe(sacsac)2 and Fe( sacsac )2(CO)2 in chloroform are reported ( sacsac - = C5H7S2- = dithioacetylacetonate anion = pentane-2,4-dithionate anion). Fe( sacsac )2 is reversibly reduced to [Fe( sacsac )2]-, but no other redox processes are observed within the solvent limits. Fe( sacsac )2(CO)2 undergoes a reversible one-electron reduction followed by rapid loss of carbon monoxide to generate [Fe( sacsac )2]-. The oxidation of Fe( sacsac )2(CO)2 results in the oxidation of a dithioacetylacetonate ligand to the 3,5-dimethyl-1,2-dithiolium cation and the formation of a previou

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Madsen, S. R., J. Overgaard, D. Stalke, and B. B. Iversen. "High-pressure single crystal X-ray diffraction study of the linear metal chain compound Co3(dpa)4Br2·CH2Cl2." Dalton Transactions 44, no. 19 (2015): 9038–43. http://dx.doi.org/10.1039/c5dt00447k.

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The effects of non-hydrostaticity in n-pentane-isopentane were overcome by annealing, and accurate crystal structures of Co<sub>3</sub>(dpa)<sub>4</sub>Cl<sub>2</sub>·CH<sub>2</sub>Cl<sub>2</sub> were determined above 10 GPa.

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Perdih, Franc. "(Pentane-2,4-dionato-κ2O,O′)(pyridin-2-amine-κN1)copper(II) and (pentane-2,4-dionato-κ2O,O′)(pyrimidin-2-amine-κN1)copper(II)". Acta Crystallographica Section C Crystal Structure Communications 68, № 3 (2012): m64—m68. http://dx.doi.org/10.1107/s0108270112004386.

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The title compounds, [Cu(C5H7O2)2(C5H6N2)], (I), and [Cu(C5H7O2)2(C4H5N3)], (II), were prepared by the reaction of bis(pentane-2,4-dionato-κ2O,O′)copper(II) with pyridin-2-amine and pyrimidin-2-amine, respectively. From a chemical point of view, it is interesting that no Schiff base formation was observed. The compounds are isostructural, with both having a square-pyramidal coordination of the CuIIatom and intramolecular N—H...O hydrogen bonding. The additional N atom of the pyrimidin-2-amine ligand is not involved in hydrogen bonding or in metal coordination. In the crystal structure, chelate

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36

Liu, Sibao, Yasuyo Okuyama, Masazumi Tamura, Yoshinao Nakagawa, Akio Imai, and Keiichi Tomishige. "Selective transformation of hemicellulose (xylan) into n-pentane, pentanols or xylitol over a rhenium-modified iridium catalyst combined with acids." Green Chemistry 18, no. 1 (2016): 165–75. http://dx.doi.org/10.1039/c5gc02183a.

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37

Jung, Seungho, Moon Sam Shin, and Hwayong Kim. "Vapor−Liquid Equilibria for then-Pentane + 1-Propanol andn-Pentane + 2-Methyl-1-propanol Systems near the Critical Region." Journal of Chemical & Engineering Data 51, no. 2 (2006): 656–59. http://dx.doi.org/10.1021/je050442w.

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38

Daher, Sawsan, and Fazil O. Gülaçar. "Identification of New Aromatic Compounds in the New Zealand Manuka Honey by Gas Chromatography-Mass Spectrometry." E-Journal of Chemistry 7, s1 (2010): S7—S14. http://dx.doi.org/10.1155/2010/472769.

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Analysis of aromatic compounds in the New Zealand manuka honey was carried out by solid phase microextraction followed by gas chromatography-mass spectrometry. A total of 38 compounds were detected. Seven of them such as; 1,4-bis(x-methoxyphenyl)-but-2-en-1-one, 1,5-bis(x-methoxyphenyl)-pent-3-en-1-one, 1,4-bis(x-methoxyphenyl)-1-pentanone, 1,6-bis(x-methoxyphenyl)-3-heptene, 1,6-bis(x-methoxyphenyl)-hex-2(3 or 4)-en-1-one and 2(3, 4 or 5)-hydroxy-1,6-bis(x-methoxyphenyl)-1-hexanone, had never before been identified as natural products. Their structures were deduced from the mass spectral data

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39

Hemscheidt, Thomas, and Ian D. Spenser. "Biosynthesis of lupanine: incorporation of [3,3-2H2]cadaverine." Canadian Journal of Chemistry 65, no. 1 (1987): 170–74. http://dx.doi.org/10.1139/v87-026.

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The mode of incorporation of 2H from [3,3-2H2]cadaverine into lupanine (2) and 13α-hydroxylupanine (3) in Lupinusangustifolius was determined by 2H nmr spectroscopy. Lupanine carried deuterium at positions 4α, 4β, 8α, 8β, 13α, and 13β. These six sites were approximately equally enriched. Similarly, 13α-hydroxylupanine carried label approximately equally at five sites, 4α, 4β, 8α, 8β, and 13β. [3,3-2H2]Cadaverine was prepared by borodeuteride reduction in D2O of the p-toluene-sulfonylhydrazone of N-benzoylpiperid-4-one, followed by degradation of the resulting N-benzoyl[4,4-2H2]piperidine into

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40

Pervova, I. G., A. V. Zaĭdman, I. N. Lipunov, and P. A. Slepukhin. "X-ray diffraction study of 1,5-bis(2-Formylphenoxy)pentane." Crystallography Reports 55, no. 2 (2010): 237–39. http://dx.doi.org/10.1134/s1063774510020136.

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41

Castañeda, Fernando, Christian Aliaga, Clifford A. Bunton, María Teresa Garland, and Ricardo Baggio. "3-(Triphenylphosphoranylidene)pentane-2,4-dione and diethyl 2-(triphenylphosphoranylidene)malonate." Acta Crystallographica Section C Crystal Structure Communications 61, no. 8 (2005): o496—o499. http://dx.doi.org/10.1107/s0108270105015064.

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42

Jasinski, Jerry P., Ray J. Butcher, H. S. Yathirajan, B. Narayana, and M. T. Swamy. "3-(2-Chlorophenyl)-1,5-bis(4-chlorophenyl)pentane-1,5-dione." Acta Crystallographica Section E Structure Reports Online 63, no. 12 (2007): o4808—o4809. http://dx.doi.org/10.1107/s1600536807059089.

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43

Qiu, Xiao-Yang, Ji-Long Ma, and Wei-Sheng Liu. "3-(2-Chlorophenyl)-1,5-bis(4-nitrophenyl)pentane-1,5-dione." Acta Crystallographica Section E Structure Reports Online 62, no. 10 (2006): o4565—o4566. http://dx.doi.org/10.1107/s1600536806037512.

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44

Huang, Xian-Qiang, Yong-Xin Tan, Jian-Min Dou, Da-Cheng Li, and Chun-Shui Zhang. "3-(2-Furyl)-1,5-bis(4-methylphenyl)pentane-1,5-dione." Acta Crystallographica Section E Structure Reports Online 62, no. 11 (2006): o5257—o5258. http://dx.doi.org/10.1107/s1600536806043789.

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45

Wallace, Claire M., Carl H. Schiesser, and Amber N. Hancock. "Slow homolytic substitution reactions at selenium: 2-Selenabicyclo[1.1.1]pentane." Computational and Theoretical Chemistry 1068 (September 2015): 128–33. http://dx.doi.org/10.1016/j.comptc.2015.06.026.

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46

Huang, Xianqiang, Feng Xin, Qiu-Lan Shi, Yong Wang, and Guo-Dong Wei. "1,5-Bis(4-chlorophenyl)-3-(2-thienyl)pentane-1,5-dione." Acta Crystallographica Section E Structure Reports Online 64, no. 12 (2008): o2454. http://dx.doi.org/10.1107/s1600536808038993.

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47

Insuasty, Daniel, Rodrigo Abonía, Justo Cobo, and Christopher Glidewell. "Two closely related, and unexpected, quinolinone derivatives: a three-dimensional hydrogen-bonded framework structure and a hydrogen-bonded molecular ribbon ofR22(18) andR44(24) rings." Acta Crystallographica Section C Crystal Structure Communications 68, no. 6 (2012): o220—o225. http://dx.doi.org/10.1107/s0108270112020860.

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1,5-Bis(4-chlorophenyl)-3-(2-oxo-1,2-dihydroquinolin-3-yl)pentane-1,5-dione, (Ia), and 1,5-bis(2-chlorophenyl)-3-(2-oxo-1,2-dihydroquinolin-3-yl)pentane-1,5-dione, (Ib), crystallize as an 84:16 mixture, 0.84C26H19Cl2NO3·0.16C26H19Cl2NO3, in the space groupI41/a, where the molecules of the two isomers occupy very similar sites in the unit cell. A combination of one N—H...O hydrogen bond and one C—H...O hydrogen bond links the molecules, regardless of isomeric form, into a single three-dimensional framework structure. The molecules of (9RS,10RS)-8,9-bis(4-chlorobenzyl)-10-(2-oxo-1,2-dihydroquino

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48

Delgado-Abad, Thais, Jaime Martínez-Ferrer, Javier Reig-López, et al. "On the ionizing properties of supercritical carbon dioxide: uncatalyzed electrophilic bromination of aromatics." RSC Adv. 4, no. 92 (2014): 51016–21. http://dx.doi.org/10.1039/c4ra10557e.

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scCO<sub>2</sub>, a non-polar solvent with a dielectric constant lower than n-pentane, promotes the electrophilic bromination of aromatics as efficiently as strongly ionizing solvents such as aqueous acetic and trifluoroacetic acids.

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49

Uma, Karpurapu, Narender Raju Panjagari, Rakesh Kumar Raman, et al. "Headspace volatile markers of Sandesh, a chhana-based delicacy stored at elevated temperatures." Indian Journal of Dairy Science 77, no. 2 (2024): 97–109. https://doi.org/10.33785/ijds.2024.v77i02.001.

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The present study explores the headspace volatiles of Sandesh (dessert made from heat acid coagulated milk) that contribute to the product quality during storage. Sandesh is packaged in clear and dark-coloured glass containers and stored at 30 °C and 45 °C in an incubator. Sandesh quality during the storage was estimated by biochemical, microbiological and sensory analysis. The concentration of head-space volatiles was simultaneously determined by employing headspace solid-phase micro-extraction coupled with gas chromatography-mass spectrometry (HS-SPME-GC-MS). The identified volatiles were pe

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50

Elliott, RL, and BO West. "The Synthesis of Oxo-Bridged CrIII-O-VV Compounds." Australian Journal of Chemistry 41, no. 9 (1988): 1417. http://dx.doi.org/10.1071/ch9881417.

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CrIVO ( tpp = dianion of 5,10,15,20-tetraphenylporphyrin) can undergo redox reactions with VIVO(L)2 [L = anions of quinolin-8-ol (Q) or pentane-2,4-dione ( acac )] to yield oxo -bridged complexes (tpp) CrIIIOVV (L)2. The presence of CrIII and VV ions is supported by magnetic and e.s.r . measurements.

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