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Journal articles on the topic 'Bromo complex'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Chan, Lisa M., Atta M. Arif та Richard D. Ernst. "Solid State Structure of Bis[(bromo)(dicyclopentadienyl)vanadium(μ2-fluoro)][(bromo)(cyclopentadienyl)vanadium][tetrafluoroborate]". Journal of Crystallography 2015 (29 листопада 2015): 1–4. http://dx.doi.org/10.1155/2015/312963.

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The new complex [V(C5H5)2Br]2(μ2-F)2[V(C5H5)Br]+[BF4]− has been isolated from the reaction of vanadocene monobromide with the ferrocenium cation. The complex is a mixed valence compound composed of two V(IV) and one V(III) centers. The V(III) center has one cyclopentadienyl ligand in its coordination sphere, as well as a bromide and two fluoride ligands. Each fluoride ligand is also attached to one of the V(IV) centers, which additionally is coordinated by a bromide and two cyclopentadienyl ligands. The complex crystallizes in the monoclinic space group P21/m, with a=7.66490(10) Å, b=15.2457(2

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2

Gingl, Franz, та Joachim Strähle. "Synthese und Struktur von μ-Bromo-μ-dioxo-bis( phthalocyaninato-niob(V))tribromid, [(PcNb)2O2Br]+Br3-, einem zweikernigen Phthalocyaninatokomplex / Synthesis and Structure of μ-Bromo-μ-dioxo-bis(phthalocyaninato-niobium(V))tribromide, [(PcNb)2O2Br]+Br3-, a Dinuclear Phthalocyaninato Complex". Zeitschrift für Naturforschung B 44, № 2 (1989): 110–16. http://dx.doi.org/10.1515/znb-1989-0202.

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Abstract dioxo-bis(phthaIocyaninato-niob(V))tribromid, [(PcNb)20 2Br]+BrJ, einem zweikernigen Phthalocyaninatokomplex Synthesis and Structure of i w-Bromo-/ i/-dioxo-bis(phthalocyaninato-niobium(V))tribromide, [(PcNb)20 2Br]~Br3 , i w -Brom o-^-dioxo-bis(phthalocyaninato-niobium (V))tribrom ide. Synthesis. Crystal Structure

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3

Corredoira-Vázquez, Julio, Matilde Fondo, Jesús Sanmartín-Matalobos, and Ana M. García-Deibe. "2D Supramolecular Structure for a Chiral Heterotrinuclear ZnII2HoIII Complex through Varied HBonds Connecting Solvates and Counterions." Proceedings 2, no. 14 (2018): 1114. http://dx.doi.org/10.3390/iecc_2018-05247.

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We report the crystal structure of [ZnII2HoIII(L)(ald)(HO)(H2O)3(MeCN)](NO3)2·EtOH [H3L = 2-(5-bromo-2-hydroxy-3-methoxyphenyl)-1,3-bis[4-(5-bromo-2-hydroxy-3-methoxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine) and Hald = 5-bromo-2-hydroxy-3-methoxy-benzaldehyde]. Despite the presence of two bulky multidentate ligands, as well as several monodentate ligands surrounding the nonacoordinate holmium cation, and the two pseudooctahedral zinc ions, the intricate H-bonded system formed by this chiral heterotrinuclear complex is only expanded in a 2D supramolecular structure. The interactions involve t

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4

Lashgari, A., and Sh Ghammamy. "Synthesis and characterization of new bromomolybdate complex (C6H13)4N MoO3Br." Bangladesh Journal of Scientific and Industrial Research 50, no. 4 (2015): 297–99. http://dx.doi.org/10.3329/bjsir.v50i4.25840.

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The reaction between tetrahexylammonium bromide and MoO3 produced a new bromo salt (bromotrioxomolybdate (VI)). (C6H13)4N [MoO3Br], characterized by IR, UV/Visible and 81Br-NMR techniques.Bangladesh J. Sci. Ind. Res. 50(4), 297-299, 2015

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5

Toda, Miura, Miya та Takenaka. "Synthesis of Brominated Polyethylene by Copolymerization of Ethylene with ω–bromoalkene Catalyzed by a Metallocene and Methylaluminoxane System". Catalysts 9, № 8 (2019): 660. http://dx.doi.org/10.3390/catal9080660.

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The metallocene-catalyzed copolymerization of ethylene and 11–bromo–1–undecene was carried out to synthesize brominated polyethylene (PE). A modified methylaluminoxane (MMAO) solution was used as a cocatalyst and rac–Et(H4Ind)2ZrCl2 as a catalyst. The copolymerization showed a high activity and afforded the copolymer with a 11-bromo-1-undecene incorporation ranging from 1.0 to 4.3 mol%. When using a dried methylaluminoxane (dMAO) as a cocatalyst, the incorporation ratio of 11-bromo-1-undecene increased remarkably to 25.2 mol%. It was demonstrated that the type of MAO used as a cocatalyst affec

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6

Tanley, Simon W. M., Laurina-Victoria Starkey, Lucinda Lamplough, Surasek Kaenket, and John R. Helliwell. "The binding of platinum hexahalides (Cl, Br and I) to hen egg-white lysozyme and the chemical transformation of the PtI6octahedral complex to a PtI3moiety bound to His15." Acta Crystallographica Section F Structural Biology Communications 70, no. 9 (2014): 1132–34. http://dx.doi.org/10.1107/s2053230x14014009.

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This study examines the binding and chemical stability of the platinum hexahalides K2PtCl6, K2PtBr6and K2PtI6when soaked into pre-grown hen egg-white lysozyme (HEWL) crystals as the protein host. Direct comparison of the iodo complex with the chloro and bromo complexes shows that the iodo complex is partly chemically transformed to a square-planar PtI3complex bound to the Nδatom of His15, a chemical behaviour that is not exhibited by the chloro or bromo complexes. Each complex does, however, bind to HEWL in its octahedral form either at one site (PtI6) or at two sites (PtBr6and PtCl6). As heav

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7

Sengupta, Gargi, Pragati Pandey, Subhabrata De, Ramesh Ramapanicker, and Jitendra K. Bera. "A bromo-capped diruthenium(i,i) N-heterocyclic carbene compound for in situ bromine generation with NBS: catalytic olefin aziridination reactions." Dalton Transactions 47, no. 34 (2018): 11917–24. http://dx.doi.org/10.1039/c8dt01851k.

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8

Farag, Abeer Mohamed, Teoh Siang Guan, Hasnah Osman, Madhukar Hemamalini та Hoong-Kun Fun. "catena-Poly[[[aquamanganese(III)]-μ-(E)-5-bromo-N-[2-(5-bromo-2-oxidobenzylideneamino)-4-nitrophenyl]-2-oxidobenzamidato]N,N-dimethylfomamide monosolvate]". Acta Crystallographica Section E Structure Reports Online 68, № 4 (2012): m365—m366. http://dx.doi.org/10.1107/s1600536812008501.

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The asymmetric unit of the title complex, {[Mn(C20H10Br2N3O5)(H2O)]·(CH3)2NCHO}n, consists of one MnIIIion, one (E)-5-bromo-N-[2-(5-bromo-2-oxidobenzylideneamino)-4-nitrophenyl]-2-oxidobenzamidate ligand (Schiff base), one water molecule and anN,N-dimethylformamide molecule. The coordination geometry around the MnIIIion is a distorted octahedron, being surrounded by two O and two N atoms from the Schiff base, which are positioned in the equatorial plane. The water molecule and the O atom of the carbonyl group from the adjacent MnIIIcomplex are situated at the axial positions, leading to a poly

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9

Kyri, A. W., G. Schnakenburg, and R. Streubel. "A novel route to C-unsubstituted 1,2-oxaphosphetane and 1,2-oxaphospholane complexes." Chemical Communications 52, no. 55 (2016): 8593–95. http://dx.doi.org/10.1039/c6cc04667c.

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The synthesis of 1,2-oxaphosphetane complexes 7 and 1,2-oxaphospholane complex 12 bearing only substituents at phosphorus is reported using the reaction of Li/Cl phosphinidenoid complex 2 with 2-iodoethanol or 3-bromo-propane-1-ol and the subsequent dehydrohalogenation using KHMDS.

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10

Zhao, Yun, Xiao-Feng Shen, and Li-Fang Zhang. "A new mononuclear neutral high-spin iron(III) complex with the different tridentate ligands 5-bromosalicylaldehyde (pyridin-2-yl)hydrazone and 5-bromosalicylaldehyde thiosemicarbazone." Acta Crystallographica Section E Crystallographic Communications 74, no. 2 (2018): 252–55. http://dx.doi.org/10.1107/s2056989018001263.

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The title neutral mononuclear complex, [1-(5-bromo-2-oxidobenzylidene)thiosemicarbazidato](4-bromo-2-{[2-(pyridin-2-yl)hydrazinylidene]methyl}phenolato)iron(III), [Fe(C8H6BrN3OS)(C12H9BrN3O)] (I), crystallizes in the monoclinic space group C 2/c and has two different planar tridentate ligands. The central FeIII ion is coordinated to three N, two O and one S atom, forming a distorted octahedral FeN3O2S coordination geometry. In the crystal, the complex molecules are linked by N—H...O and N—H...N hydrogen bonds and π–π interactions into layers parallel to (100). Magnetic measurements show that t

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11

Qian, Heng-Yu. "Synthesis, Characterization and Crystal Structures of Zinc(II) and Cobalt(III) Complexes Derived from Tridentate NNO- and NON- Schiff Bases with Antibacterial Activities." Acta Chimica Slovenica 68, no. 3 (2021): 700–708. http://dx.doi.org/10.17344/acsi.2021.6721.

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Two new polynuclear zinc complexes [Zn2Br2(L1)2] (1) and [Zn(μ1,5-dca)L2]n (2), and two new mononuclear cobalt(III) complexes [CoL1N3(Brsal)] (3) and [CoL2(HL2)] (4), where L1 = 5-bromo-2-(((2-dimethylamino)ethyl)imino)methyl)phenolate, L2 = 5-bromo-2-(((2-hydroxyethyl)imino)methyl)phenolate, dca = dicyanoamide, Brsal = 5-bromo-2-formylphenolate, have been synthesized and characterized. The complexes were characterized by elemental analyses, IR, UVVis spectra, molar conductivity, and single crystal X-ray diffraction. X-ray analysis indicates that the Zn atoms in complex 1 are in distorted squa

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12

Santos, Marina, and Graciela M. Escandar. "Cyclodextrin-Induced Room-Temperature Phosphorescence of 1-Bromo-2-naphthol upon Formation of Ternary Complexes." Applied Spectroscopy 55, no. 11 (2001): 1483–88. http://dx.doi.org/10.1366/0003702011953900.

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The inclusion constant for the 1:1 binary complex between 1-bromo-2-naphthol and β-cyclodextrin in aqueous solution was determined by a spectrofluorimetric method. On the basis of MO calculations, a possible structure of this complex was proposed and compared with those formed by two related naphthol derivatives. After the addition of different alcohols (linear, branched, and cyclic) to the 1-bromo-2-naphthol–β-cyclodextrin solution, a significant enhancement of the room-temperature phosphorescence (RTP) was observed. Both the formation constants and stoichiometries of the formed ternary compl

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13

Adeloye, Adewale O., and Peter A. Ajibade. "Synthesis, Characterization, Electrochemistry, and Spectroscopic Properties of Some Anthracenyl Functionalized Phthalocyanine Complexes of Ruthenium(II)." Journal of Chemistry 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/257206.

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The synthesis of single- and double-decked anthracenyl functionalized ruthenium(II) phthalocyanine complexes has been achieved through a controlled electrophilic aromatic substitution reaction of the free unsubstituted ruthenium(II) phthalocyanine with preformed 9-bromo-10-(2,3-dimethylacrylic acid)-anthracene and/or 9-bromo-10-(2,3-dimethylacrylic acid)-dianthracene using 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as catalyst. The complexes were characterized by IR, UV-Vis, fluorescence,1H,13C NMR, and elemental analyses. A dimeric complex (C3R′′RuPc, whereR′′is 9-dianthracenyl-10-(2,3-dimethyl

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14

Rani, Varsha, Harkesh B. Singh, and Ray J. Butcher. "Synthesis and structure of the mercury chloride complex of 2,2′-(2-bromo-5-tert-butyl-1,3-phenylene)bis(1-methyl-1H-benzimidazole)." Acta Crystallographica Section E Crystallographic Communications 73, no. 3 (2017): 341–44. http://dx.doi.org/10.1107/s2056989017001888.

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In the title mercury complex,catena-poly[[dichloridomercury(II)]-μ-2,2′-(2-bromo-5-tert-butyl-1,3-phenylene)bis(1-methyl-1H-benzimidazole)-κ2N3:N3′], [HgCl2(C26H25BrN4)]n, the HgIIatom is coordinated by two Cl atoms and by two N atoms from two 2,2′-(2-bromo-5-tert-butyl-1,3-phenylene)bis(1-methyl-1H-benzimidazole) ligands. The metal cation adopts a distorted tetrahedral coordination geometry with with bond angles around mercury of 100.59 (15)° [N—Hg—N] and 126.35 (7)° [Cl—Hg—Cl]. This arrangement gives rise to a zigzag helical 1-D polymer propagating along theb-axis direction.

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15

Ginzinger, Werner, Vladimir Arion, Gerald Giester, Markus Galanski, and Bernhard Keppler. "Synthesis and structural peculiarities of gallium Complexes with novel paullone derivatives." Open Chemistry 6, no. 3 (2008): 340–46. http://dx.doi.org/10.2478/s11532-008-0048-x.

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Abstract9-Bromo-7,12-dihydroindolo[3,2-d][1]benzazepin-6-ylhydrazine was reacted with 2-acetylpyridine to give a Schiff base as a potential tridentate ligand. The reaction of this ligand with gallium chloride afforded complexes of 1:1 and 2:1 stoichiometry. The results of X-ray diffraction studies of the ligand and both gallium complexes are reported and compared with the data for a related gallium complex with a Schiff base obtained from 9-bromo-7,12-dihydroindolo[3,2-d][1]benzazepin-6-ylhydrazine and 2-hydroxybenzaldehyde.

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16

Takamuku, Toshiyuki, Mikito Ihara, Toshio Yamaguchi, and Hisanobu Wakita. "Raman Spectroscopic and X-ray Diffraction Studies on Concentrated Aqueous Zinc (II) Bromide Solution at High Temperatures." Zeitschrift für Naturforschung A 47, no. 3 (1992): 485–92. http://dx.doi.org/10.1515/zna-1992-0308.

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Abstract Raman and X-ray scattering experiments have been performed on an aqueous zinc (II) bromide solution with molar ratio [ H2 0] / [ ZnBr2 ] =10 at 25 to 140 °C. The intensity of the totally symmetric Zn - Br stretching vibration (ν1) for the dibromozinc(II) complex increased with increasing temperature while that for the tetrabromo complex decreased. A broad band assigned to the symmetric Zn - O stretching vibration ( ν1 ) for the aqua zinc (II) ion decreased in intensity with increasing temperature. The X-ray diffraction data revealed that the average number of the Zn - Br interactions

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17

Pérez-Otero, Yolanda, M. Isabel Fernández-García, Esther Gómez-Fórneas, Gustavo González-Riopedre, and Marcelino Maneiro. "Mimicking Peroxidase Activity by a Manganese(II) Complex Involving a New Asymmetric Tetradentate Ligand Containing Both Amino and Imino Groups." Journal of Chemistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/963152.

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The asymmetric ligand (E)-4-bromo-2-(((2-((5-bromo-2-hydroxybenzyl)(methyl)amino)ethyl)imino)methyl)phenol has been prepared by a novel seven-step route. All organic compounds isolated in each step have been characterised by elemental analysis, infrared and1H NMR spectroscopy, and mass spectrometry. Interaction of this ligand with manganese has been investigated employing an electrochemical method. This method leads to the formation of a neutral manganese(II) complex7in high yield and purity. The complex has been thoroughly characterised by elemental analysis, infrared spectroscopy, mass spect

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18

Hahn, F. Ekkehardt, Tania Pape, and Christian Holtgrewe. "The Pd(II) Complex of a N,N’-Diallylbenzimidazol-2-ylidene Ligand." Zeitschrift für Naturforschung B 59, no. 9 (2004): 1051–53. http://dx.doi.org/10.1515/znb-2004-0917.

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The palladium(II) dicarbene complex trans-[PdBr2(L)2], 2 (L = 1,3-di-(2-propenyl)-benzimidazol- 2-ylidene) was synthesized from 1,3-di-(2-propenyl)-benzimidazolium bromide 1 and Pd(OAc)2 by in situ deprotonation. The X-ray structure analysis revealed a mononuclear complex with a palladium( II) center coordinated in a square-planar fashion by the two carbene functions and two bromo ligands.

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19

ELMALI, Ayhan, and Yalçin ELERMAN. "Crystal Structure of Chloro[bis(5-bromo-salicylideniminephenyl)disulfide]-iron(III) Complex." Analytical Sciences 18, no. 12 (2002): 1399–400. http://dx.doi.org/10.2116/analsci.18.1399.

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20

Gurovets, A. S., V. Z. Sharf, and L. I. Belen'kii. "Hydrodehalogenation of bromo- and chloropyridines over palladium complex and palladium metal catalysts." Chemistry of Heterocyclic Compounds 21, no. 9 (1985): 1023–25. http://dx.doi.org/10.1007/bf00515028.

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21

Arnold, Dennis P., Raymond C. Bott, Helen Eldridge, Fiona M. Elms, Graham Smith, and Mike Zojaji. "Functionalization of 5,15-Diphenylporphyrin: Preparation and X-Ray Crystal Structures of meso Nitro, Bromo, and Trimethylsilylethynyl Derivatives." Australian Journal of Chemistry 50, no. 5 (1997): 495. http://dx.doi.org/10.1071/c96193.

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Substitutions on 5,15-diphenylporphyrin led to the isolation of mono- and di-bromo and mono- and di-nitro derivatives, which were converted into their respective nickel(II) complexes. Reaction of the bromoporphyrins with iodine/silver nitrite resulted in nitrodebromination as well as conventional nitration. The nickel(II) complex of 5-nitro-10,20-diphenylporphyrin was reduced to the 5-amino derivative. The nickel(II) complexes of the bromoporphyrins were converted into the respective mono- and bis-(trimethylsilylethynyl) species. The crystal structures of 5-nitro-10,20-diphenylporphyrin, 5-bro

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22

Gifari, Fahrizal, Tatag Muttaqin, and Ramli Ramadhan. "Kajian Kearifan Lokal Masyarakat Desa Ngadas Terhadap Pengembangan Ekowisata di Taman Nasional Bromo Tengger Semeru Jawa Timur." Journal of Forest Science Avicennia 2, no. 2 (2019): 15. http://dx.doi.org/10.22219/avicennia.v2i2.9406.

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ABSTRACT Bromo Tengger Semeru National Park (TNBTS) is a complex area of approximately 50,276 Ha in the mountainous region, covering three famous landscapes namely Mount Bromo, Tengger Caldera and Mount Semeru. Based on the Decree of the Director General of PHKA No. 68 / Kpts / Dj-VI / 1998, TNBTS zoning consists of: Core Zone 22,006 Ha; Jungle Zone 23.485,20 Ha; Intensive Use Zone 425 Ha; Traditional Use Zone 2,360 Ha; and the 2,000 Ha Rehabilitation Zone.This study aims to examine the local wisdom adopted by the community in Ngadas Village. When the research began in June-July 2019 and the r

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23

Keesara, Srinivas, and Saiprathima Parvathaneni. "A 2-((4-Arylpiperazin-1-yl)methyl)phenol ligated Pd(ii) complex: an efficient, versatile catalyst for Suzuki–Miyaura cross-coupling reactions." New Journal of Chemistry 40, no. 9 (2016): 7596–603. http://dx.doi.org/10.1039/c5nj03450g.

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N,N,O-Tridentate palladium(ii) complex 4a was found to be an efficient catalyst for the Suzuki cross-coupling reaction of aryl halides (iodo-, bromo- and chloro-), which afforded cross-coupling products in good to excellent yields.

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24

Xu, Li-Qing, Li-Ping Lu, and Miao-Li Zhu. "Analogy to a Chinese knot in an ion-pair copper(II)–neodymium(III) complex based on a hexadentate Schiff base condensation product of 5-bromosalicylaldehyde and glycylglycine." Acta Crystallographica Section C Crystal Structure Communications 69, no. 4 (2013): 376–79. http://dx.doi.org/10.1107/s0108270113006367.

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Self-assembly of CuCl2, NdCl3, 5-bromosalicylaldehyde and glycylglycine yields the ion-pair copper(II)–neodymium(III) complex, poly[[decaaquabis[μ3-2-({2-[(5-bromo-2-oxidobenzylidene)amino]acetyl}azanidyl)acetato]bis[μ2-2-({2-[(5-bromo-2-oxidobenzylidene)amino]acetyl}azanidyl)acetato]tetracopper(II)dineodymium(III)] bis{[2-({2-[(5-bromo-2-oxidobenzylidene)amino]acetyl}azanidyl)acetato]cuprate(II)} tetradecahydrate], {[Cu4Nd2(C11H8BrN2O4)4(H2O)10][Cu(C11H8BrN2O4)]2·14H2O}n. The anion is planar and mononuclear, showing an approximately square-planar coordination of the metal atom, while the cati

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Selvaraju, Radhakrishnan, Mariappan Manoharan, Parthasarathi Laavanya, Krishnaswamy Panchanatheswaran, and Ponnambalam Venuvanalingam. "Geometrical Preferences in Bis(dithiocarbamato)tin(IV) Complexes: X-Ray Structure of cis-I2Sn[S2CN(C2H5)2]2 and Theoretical Investigations." Journal of Chemical Research 23, no. 2 (1999): 82–83. http://dx.doi.org/10.1177/174751989902300208.

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The geometry of cis-l2Sn[S2CN(C2H5)2]2 is confirmed by single crystal X-ray analysis; the spectral data of the complex resemble those of the bromo complex and PM3 calculations on octahedral complexes of the type XYSn[S2CN(C2H5)2]2 reveal that their geometrical preferences depend upon the electron availability on the monodentate ligands X or Y.

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Isago, Hiroaki, and Yutaka Kagaya. "Synthesis and spectral properties of a dihydroxo(phthalocyaninato)antimony(V) complex." Journal of Porphyrins and Phthalocyanines 13, no. 03 (2009): 382–89. http://dx.doi.org/10.1142/s1088424609000474.

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The title complex cation, [ Sb ( pc )( OH )2]+, (pc = phthalocyaninate, C 32 H 16 N 82-) has been prepared by oxidizing [ Sb ( pc )] I 3 with tert-butyl perbenzoate and isolated as hexafluorophosphate and triflate salts. These salts are relatively well-soluble in polar solvents (e.g. CH 2 Cl 2, acetonitrile, acetone) without detectable aggregation. In particular, they dissolve relatively well in ethanol and methanol in which [ Sb ( pc ) Br 2]+ or [ Sb ( pc ) Cl 2]+ salts are poorly soluble whereas they have extremely low solubility in 1-chloronaphthalene and CHCl 3, unlike the bromo or chloro

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27

Takamuku, Toshiyuki, Keisuke Nakamura, Mikito Ihara, and Toshio Yamaguchi. "Raman Scattering and X-ray Diffraction Studies on Zinc(II)Bromide Solutions in Methanol and N,N-Dimethylformamide in the Temperature Range 77-333 K." Zeitschrift für Naturforschung A 49, no. 12 (1994): 1119–30. http://dx.doi.org/10.1515/zna-1994-1204.

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Abstract The structure of zinc(II) bromo complexes in methanol and N,N-dimethylformamide (DMF) (molar ratio [solvent]/[ZnBr2] = 10, temperature range 77 -333 K) has been investigated by Raman scattering and X-ray diffraction. In the methanol solution symmetric Zn - Br vibrations (γ1) of the dibromo- and tribromozinc(II) complexes were observed at 209 and 184 cm-1, respectively. With decreasing temperature the intensity of the γ1 band decreased for the dibromo and increased for the tribromo complex. In addition, the γ1 band for the tetrabromo complex appeared in the supercooled and glassy metha

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28

Pavlik, Sonja, Karl Kirchner та Kurt Mereiter. "(η3-Allyl)bromo(η5-cyclopentadienyl)(phenylaminodiphenylphosphine-κP)ruthenium(IV) hexafluorophosphate". Acta Crystallographica Section E Structure Reports Online 62, № 5 (2006): m1051—m1053. http://dx.doi.org/10.1107/s1600536806012712.

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The title compound, [RuBr(η5-C5H5)(η3-C3H5)(C18H16NP)]PF6, contains a half-sandwich cyclopentadienylruthenium(IV) complex with a three-legged piano-stool structure and an intramolecular N—H...Br hydrogen bond.

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29

Longstreet, Ashley R., Suzanne M. Opalka, Brian S. Campbell, B. Frank Gupton, and D. Tyler McQuade. "Investigating the continuous synthesis of a nicotinonitrile precursor to nevirapine." Beilstein Journal of Organic Chemistry 9 (November 20, 2013): 2570–78. http://dx.doi.org/10.3762/bjoc.9.292.

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2-Chloro-3-amino-4-picoline (CAPIC) is a strategic building block for the preparation of nevirapine, a widely-prescribed non-nucleosidic reverse transcriptase inhibitor for the treatment of HIV-infected patients. A continuous synthesis to the bromo derivative of a CAPIC intermediate, 2-bromo-4-methylnicotinonitrile, that terminates in a dead-end crystallization is described. The route uses inexpensive, acyclic commodity-based raw materials and has the potential to enable lower cost production of nevirapine as well as other value added structures that contain complex pyridines. The route termin

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30

Corredoira-Vázquez, Julio, Cristina González-Barreira, Ana M. García Deibe, Jesús Sanmartín-Matalobos, and Matilde Fondo. "Uncommon Coordination Modes of a Potential Heptadentate Aminophenol Donor." Chemistry Proceedings 3, no. 1 (2020): 141. http://dx.doi.org/10.3390/ecsoc-24-08293.

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This work describes the synthesis, characterization and reactivity towards HoIII of a potential heptadentate N4O3 aminophenol donor. The crystal structure of the [Ho(1,1,4-H3L)(1,1,4-H6L)] complex (1,1,4-H6L = 6,6′-(2-(5-bromo-2-hydroxy -3-nitrobenzyl)-2,5,8,11-tetraazadodecane-1,12-diyl)bis(4-bromo-2-nitrophenol)) shows that the holmium atom binds two aminophenol ligands, one acting as trianionic hexadentate, and the other one as neutral monodentate. As far as we know, both coordination modes of the aminophenol are hitherto unknown for this kind of scarcely reported ligand. This leads to coor

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31

Morris, Sidney M., Diane Kepka-Lenhart, and Li-Chun Chen. "Differential regulation of arginases and inducible nitric oxide synthase in murine macrophage cells." American Journal of Physiology-Endocrinology and Metabolism 275, no. 5 (1998): E740—E747. http://dx.doi.org/10.1152/ajpendo.1998.275.5.e740.

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Activated macrophages avidly consume arginine via the action of inducible nitric oxide synthase (iNOS) and/or arginase. In contrast to our knowledge regarding macrophage iNOS expression, the stimuli and mechanisms that regulate expression of the cytosolic type I (arginase I) or mitochondrial type II (arginase II) isoforms of arginase in macrophages are poorly defined. We show that one or both arginase isoforms may be induced in the RAW 264.7 murine macrophage cell line and that arginase expression is regulated independently of iNOS expression. For example, 8-bromo-cAMP strongly induced both ar

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32

Barthazy, Peter, Diego Broggini, and Antonio Mezzetti. "Making a 16-electron bromo (or iodo) complex of ruthenium(II) and a CF bond in one pot." Canadian Journal of Chemistry 79, no. 5-6 (2001): 904–14. http://dx.doi.org/10.1139/v01-049.

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The 16e bromo or iodo complexes [RuX(dppp)2]+ (dppp = 1,3-bis(diphenylphosphino)propane, X = Br (1c), I (1d)) and [RuX(dppe)2]+ (dppe = 1,2-bis(diphenylphosphino)ethane, X = Br (2c), I (2d)) have been prepared exploiting the reaction of the fluoro complexes [RuF(dppp)2]+ (1a) and [Tl(µ-F)2Ru(dppe)2]+ (3) with activated alkyl bromides or iodides. The X-ray structures of 1c, 1d, 2c, and 2d suggest that the distortion of the Y-shaped trigonal-bipyramidal structure of [MX(P∩P)2]+ is possibly related to the formation of intramolecular hydrogen bonds between the halide ligand and the ortho-hydrogen

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33

Si, Zhenjun, Xiaona Li, Xiyan Li, and Hongjie Zhang. "Synthesis, photophysical properties, and theoretical studies on pyrrole-containing bromo Re(I) complex." Journal of Organometallic Chemistry 694, no. 23 (2009): 3742–48. http://dx.doi.org/10.1016/j.jorganchem.2009.07.036.

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34

Gupta, Govind Kumar, and S. P. S. Jadon. "U.V., E.P.R. and X.R.D. Spectral Analysis of Bromo Mn(II) Tetra Seleniazide Complex." Oriental Journal of Chemistry 30, no. 2 (2014): 567–70. http://dx.doi.org/10.13005/ojc/300221.

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35

Zhang, C., D. Xu, Y. Xu та X. Huang. "The Polymeric Cadmium Complex Poly[μ-(nicotinato-O,O':N)-μ-bromo-monoaquacadmium]". Acta Crystallographica Section C Crystal Structure Communications 52, № 3 (1996): 591–93. http://dx.doi.org/10.1107/s0108270195011917.

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36

Kitamura, Yoichi, Hiroyuki Muneta, and Kiyokatsu Watanabe. "Hydrolysis Kinetics oftrans(O)-Bromo, Chloro or Nitro-(3,6,9-Triazaundecanedioato)cobalt(III) Complex." Bulletin of the Chemical Society of Japan 69, no. 1 (1996): 101–5. http://dx.doi.org/10.1246/bcsj.69.101.

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37

Petters, Dina, and Ulrich Flörke. "The first example of a bromo- and phosphido-bridged binuclear rhenium carbonyl complex." Acta Crystallographica Section E Structure Reports Online 57, no. 6 (2001): m244—m245. http://dx.doi.org/10.1107/s1600536801007620.

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38

Dwivedi, Arun Kumar, K. N. Sharma, and Arvind Prasad Dwivedi. "Oxidative Study of Benzaldehyde by Isoqauinolinium Bromo Chromate." JOURNAL OF ADVANCES IN CHEMISTRY 16 (April 30, 2019): 5354–59. http://dx.doi.org/10.24297/jac.v16i0.8248.

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The kinetics analysis of the oxidative reaction between benzaldehyde and oxidant is quinolinium Bromo chromate was reported in aqueous 40% acetic acid medium at 313 K. The rate of reaction varies first-power of [IQBC] and [H2SO4], whereas fractional-order kinetics was observed for benzaldehyde. The rate constant gradually increases with decrease in dielectric constant of the medium. The neutral salt does not alter the rate. The metal cations (Cu++) slightly accelerate the rate of oxidation when added to reaction mixture. The study rules out the participation of keto form of substrate in comple

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39

Laus, Gerhard, Klaus Wurst, Volker Kahlenberg, Holger Kopacka, Christoph Kreutz, and Herwig Schottenberger. "N-Heterocyclic Carbene (NHC) Derivatives of 1,3-Di(benzyloxy)imidazolium Salts." Zeitschrift für Naturforschung B 65, no. 7 (2010): 776–82. http://dx.doi.org/10.1515/znb-2010-0702.

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1-Hydroxyimidazole-3-oxide (1) was alkylated with benzyl bromide in the presence of NaHCO3 to give the new 1,3-di(benzyloxy)imidazolium bromide 2a which was converted to the hexafluorophosphate 2b and bis(trifluoromethylsulfonyl)imide 2c. From this cation, pyridine generated a carbene which was trapped by sulfur or selenium to yield the respective 2-thione 3 or 2-selone 4. Bromination afforded the 2-bromo derivative 5. Reaction of the hexafluorophosphate 2b with silver oxide gave the silver-N-heterocyclic carbene complex 6 which was transmetallated with Au(Me2S)Cl to the gold-carbene complex 7

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40

Tan, Yao, and Yan Lei. "Synthesis, Crystal Structures, Characterization and Catalytic Property of Copper(II) Complexes Derived from Hydrazone Ligands." Acta Chimica Slovenica 68, no. 1 (2021): 44–50. http://dx.doi.org/10.17344/acsi.2020.6044.

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A new bromido-coordinated mononuclear copper(II) complex [Cu(HL1)Br2] (1), and a new mononuclear copper(II) complex [CuL2(HL2)]ClO4 · 0.5H2O (2), with the hydrazone ligands 4-tert-butyl-N’-(1-(pyridin-2-yl)ethylidene)benzohydrazide (HL1) and 4-bromo-N’-(pyridin-2-ylmethylene)benzohydrazide (HL2), have been synthesized and structurally characterized by physico-chemical methods and single crystal X-ray determination. X-ray analysis indicates that the Cu atom in complex 1 is in distorted square pyramidal coordination, and that in complex 2 is in octahedral coordination. The catalytic property for

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41

You, Zhong-Lu, Jia Wang, and Xiao Han. "Dibromo{4-bromo-2-[2-(diethylaminoethyl)iminomethyl]phenolato}zinc(II)." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (2006): m714—m716. http://dx.doi.org/10.1107/s1600536806007665.

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The title compound, [ZnBr2(C13H19BrN2O)], is a mononuclear zinc(II) complex. The ZnII atom is four-coordinated in a tetrahedral configuration by one imine N and one phenolate O atoms of the Schiff base ligand, and by two terminal Br atoms. In the crystal structure, the molecules are linked through weak Br...Br interactions, forming chains running along [20\=1].

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42

Jiang, Yu, Wen Guang Wang, Rui Cheng, Teng Zhou Yang, and Jia Ling Pu. "Synthesis of C₂-Symmetrically Functionalized Dibromo- Hexa-peri-hexabenzocoronene." Advanced Materials Research 554-556 (July 2012): 747–50. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.747.

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A novel dibromo-substituted HBC derivative, whose side chains contains oxygen heteroatoms, has been successfully synthesized by Diels-Alder reaction of asymmetric synthesis. It possesses bromo-functional groups to provide possibility to further synthesize more complex HBC derivatives. The final compound’s structure has been confirmed by1HNMR,13CNMR and MALDI-TOF mass spectrometry.

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43

Benedetti, Michele, Federica De Castro, Vincenza Lamacchia, Concetta Pacifico, Giovanni Natile, and Francesco P. Fanizzi. "Insertion of terminal alkyne into Pt–N bond of the square planar [PtI2(Me2phen)] complex." Dalton Transactions 46, no. 45 (2017): 15819–26. http://dx.doi.org/10.1039/c7dt03644b.

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The reactivity of [PtX<sub>2</sub>(Me<sub>2</sub>phen)] complexes (X = Cl, Br, I; Me<sub>2</sub>phen = 2,9-dimethyl-1,10-phenanthroline) with terminal alkynes is reported. Bromo and iodo derivatives lead to the formation of Pt(ii) alkenyl derivatives of the type [PtX<sub>2</sub>{κ<sup>2</sup>-N,C-(Z)-N̲1–N10–C̲C(H)(R)}] (N1–N10 = Me<sub>2</sub>phen) containing a Pt–N–C–C–N–C six membered metallacycle.

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44

Wang, Li Hua, Zi Jian Wang, Mei Li Zhao, et al. "Synthesis, Crystal Structure of Tetra-Nuclear Macrocyclic Zn(II) Complex and Its Application as Catalyst for Oxidation of Benzyl Alcohol." Bulletin of Chemical Reaction Engineering & Catalysis 16, no. 4 (2021): 839–46. http://dx.doi.org/10.9767/bcrec.16.4.10978.839-846.

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A new six coordinated tetra-nuclear macrocyclic Zn(II) complex, ZnL4(Phen)2 (1) (HL= 3-bromo-2-hydroxybenzaldehyde-pyridine-2-carbohydrazone, Phen = 1,10-phenanthroline) has been synthesized by the self-assembly of 3-bromo-2-hydroxybenzaldehyde-pyridine-2-carbohydrazone, Zn(CH3COO)2•2H2O, NaOH and 1,10-phenanthroline in water/ethanol (v:v = 1:3) solution. Complex 1 was characterized by elemental analysis, infra red (IR), and single-crystal X-ray diffraction (XRD) analysis. The results show that Zn1 and Zn1b ions are six-coordinated with a distorted octahedral geometric configuration by four O

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45

Bhyrappa, Puttaiah, Chellaiah Arunkumar, and Babu Varghese. "Influence of steric hindrance on the solvent-dependent absorption spectral behavior of highly brominated free base porphyrin and its Zn(II) complex." Journal of Porphyrins and Phthalocyanines 11, no. 11 (2007): 795–804. http://dx.doi.org/10.1142/s1088424607000916.

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Electronic absorption spectra of highly brominated free base porphyrin, 2,3,7,8,12,13,17,18-octabromo-tetrakis(2′,6′-dibromo-3′,5′-dimethoxyphenyl)porphyrin, H 2 T (3′,5′-DMP) PBr 16 and its Zn (II) complex were examined in various solvents. These derivatives exhibit red-shifted absorption spectral features in polar solvents relative to that observed in less polar or nonpolar solvents. The extent of red shifts observed in highly brominated porphyrins is less than those reported for the corresponding 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetraphenylporphyrin, H 2 TPPBr 8 and its Zn (II) comp

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46

You, Zhong-Lu, Xiao Han, Jia Wang, and Shu-Yun Niu. "Azido{4-bromo-2-[(2-diethylaminoethylimino)methyl]phenolato}nickel(II)." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (2006): m851—m853. http://dx.doi.org/10.1107/s1600536806010051.

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The title mononuclear nickel(II) complex, [Ni(C13H18BrN2O)N3], contains two molecules in the asymmetric unit. Each NiII atom is four-coordinated by one phenolate O atom, one imine N atom and one amine N atom from a Schiff base ligand, and by one terminal N atom of an azide anion, forming a square-planar coordination. In the crystal structure, adjacent molecules are linked through C—H...N interactions, forming chains along the a axis.

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47

Wang, Qing, and Xiao-Niu Fang. "Bis{4-Bromo-2-[3-(methylammonio)propyliminomethyl]phenolato}zinc(II) dinitrate." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): m1558—m1559. http://dx.doi.org/10.1107/s1600536806021908.

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The title compound, [Zn(C11H15BrN2O)2](NO3)2, is a centrosymmetric mononuclear Schiff base zinc(II) complex. The ZnII atom, lying on a twofold rotation axis, is four-coordinated by two phenolate O atoms and two imine N atoms from two Schiff base ligands, forming a tetrahedral coordination.

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48

Tanaka, Koichi, Tomoyuki Watanabe, and Masako Kato. "Guest-Dependent Organic Photochromism of 7-Bromo-1,4,8-Triphenyl-2,3-Benzo[3.3.0]Octa-2,4,7-Trien-6-One in the Solid State." Journal of Chemical Research 2003, no. 9 (2003): 535–37. http://dx.doi.org/10.3184/030823403322597207.

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Inclusion crystals of 7-bromo-1,4,8-triphenyl-2,3-benzo[3.3.0]octa-2,4,7-trien-6-one (1a) and its chloro-derivative (1b) showed a reversible colour change from yellow to green on exposure to UV-light, and this depends on the guest molecules present. The crystal structures of the inclusion complex were determined by X-ray analysis.

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49

Binzet, Gun, Ulrich Flörke, Nevzat Külcü, and Hakan Arslan. "Crystal and molecular structure of bis(4-bromo-N-(diethylcarbamothioyl)benzamido)nickel(II) complex." European Journal of Chemistry 3, no. 1 (2012): 37–39. http://dx.doi.org/10.5155/eurjchem.3.1.37-39.591.

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50

Mal’tseva, O. V., N. V. Chizhova та N. Zh Mamardashvili. "Spectral and complex-forming properties of β-bromo-substituted porphyrins in N,N-dimethylformamide". Russian Journal of General Chemistry 82, № 7 (2012): 1278–83. http://dx.doi.org/10.1134/s107036321207016x.

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