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2-AMINOMETHYLPYRIDINE NICKEL(Ⅱ) COMPLEXES—SYNTHESIS,MOLECULAR STRUCTURE AND CATALYSIS OF ETHYLENE POLYMERIZATION 被引量:2
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作者 伍青 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2008年第5期567-573,共7页
A series of new nickel(Ⅱ)complexes with 2-aminomethylpyridine ligands,(2-PyCH_2NHAr)_2NiBr_2(Ar=2,6- dimethylphenyl 2a;2,6-diisopropylphenyl 2b,2,6-difluorophenyl 2c),have been synthesized and used as catalyst precur... A series of new nickel(Ⅱ)complexes with 2-aminomethylpyridine ligands,(2-PyCH_2NHAr)_2NiBr_2(Ar=2,6- dimethylphenyl 2a;2,6-diisopropylphenyl 2b,2,6-difluorophenyl 2c),have been synthesized and used as catalyst precursors for ethylene polymerization in the presence of methylaluminoxane(MAO).The catalysts containing ortho-alkyl-substituents afford high molecular weight branched polyethylenes as well as a certain amount of oligomers.Enhancing the steric bulk of the alkyl substituent of the catalyst resulted in... 展开更多
关键词 2-Aminomethyipyridine nickelcomplex CATALYST Ethylene polymerization Oligomer.
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Chiral Resolution of β-dl-Phenylalanine Using Chiral Macrocyclic Nickel(Ⅱ) Complexes 被引量:2
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作者 欧光川 李治章 +1 位作者 张敏 袁先友 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第5期707-712,共6页
The reactions of chiral four-coordinated nickel(Ⅱ) complex [Ni(RR-L)](ClO4)2/[Ni(SS- L)](ClO4)2 with β-dl-phenylalanine in acetonitrile/water gave a six-coordinated enantiomer of [Ni(RR-L)(β-d-HPhe)]... The reactions of chiral four-coordinated nickel(Ⅱ) complex [Ni(RR-L)](ClO4)2/[Ni(SS- L)](ClO4)2 with β-dl-phenylalanine in acetonitrile/water gave a six-coordinated enantiomer of [Ni(RR-L)(β-d-HPhe)](ClO4)2(1) and [Ni(SS-L)(β-l-HPhe)](ClO4)2(2), respectively(L = 5,5,7, 12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, HPhe = phenylalanine). Single-crystal X-ray diffraction analyses revealed that the nickel(Ⅱ) atom displays a distorted octahedral coordination geometry by coordinating with four nitrogen atoms of L in a folded configuration, and two carboxylate oxygen atoms of β-d/l-HPhe in cis-position in both complexes. The monomers of [Ni(RR-L)(β-d-HPhe)]2+ and [Ni(SS-L)(β-l-HPhe)]2+ are connected through intermolecular hydrogen bonds to generate one-dimensional zigzag chains, respectively. The homochiral natures of 1 and 2 are confirmed by the results of CD spectroscopy. 展开更多
关键词 chiral resolution macrocyclic nickel complexes β-dl-phenylalanine
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Syntheses, Crystal Structures and Photoluminescence Properties of Cadmium(Ⅱ) and Nickel(Ⅱ) Complexes with 2-(2-Benzimidazolyl)quinoline 被引量:1
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作者 陈书阳 郭应臣 +2 位作者 张廉奉 冯玉全 郑媛媛 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第5期643-648,共6页
Two novel complexes, [Cd2(BMQU)2Cl4] (1) and [Ni(BMQU)2HPO4]·1.5H2O (2) (BMQU = 2-(2-benzimidazolyl)quinoline), were synthesized by the hydrothermal method and characterized by elemental analysis, IR,... Two novel complexes, [Cd2(BMQU)2Cl4] (1) and [Ni(BMQU)2HPO4]·1.5H2O (2) (BMQU = 2-(2-benzimidazolyl)quinoline), were synthesized by the hydrothermal method and characterized by elemental analysis, IR, and TG-DTG. The crystal structures were determined by single-crystal X-ray diffraction. Both 1 and 2 crystallize in the triclinic system, space group P . The data for 1: a = 0.8342(7), b = 0.9226(9), c = 1.0646(8) nm, α = 90.819(2), β = 97.466(2), γ = 98.280(2)°. The Cd(Ⅱ) is coordinated with three chlorine atoms and two nitrogen atoms of a BMQU molecule, generating a distorted square-pyramidal geometry. The dinuclear Cd(Ⅱ) complex is formed by two chlorine bridge bonds, and the one-dimensional chain structure is constructed with the hydrogen bond N-H…Cl and π-π stacking interaction. The data for 2: a = 1.2251(1), b = 1.2451(1), c = 1.2868(1) nm, α = 107.510(2), β = 98.630(1), γ = 109.921(2)°. The Ni(Ⅱ) is coordinated with four nitrogen atoms of two BMQU molecules and two oxygen atoms of a HPO42-, forming a distorted-octahedral geometry. The two-dimensional layer structure is formed by the hydrogen bonds and π-π stacking interaction between neighboring molecules. Complex 1 shows a strong blue fluorescence emission (λmax= 456 nm) at solid state. 展开更多
关键词 2-(2-benzimidazolyl)quinoline cadmium( complex nickelcomplex crystal structure PHOTOLUMINESCENCE
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Syntheses and Magnetism of μ-1, 3, 5-Benzenetricarboxylato Trinuclear Manganese(Ⅱ) and Nickel(Ⅱ)Complexes
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作者 SHI Jing-min LIAO Dai-zheng +2 位作者 CHENG Peng JIANG Zong-hui MIAO Ming-ming and WANG Geng-lin. (Department of Chemistry, Nankai University, Tianjin, 300071 ) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1996年第1期1-5,共5页
Two new manganese(Ⅱ ) trinuclear complexes and two new nickel (Ⅱ) trinuclear compIexes, namely, [Mn3 (BZT ) (Phen )6] (ClO4 )3 (complex 1 ), [Mn (BZT)· (Nphen )6] (ClO4 )3 (complex 2), [Ni3 (BZT) (Phen)6] (ClO4... Two new manganese(Ⅱ ) trinuclear complexes and two new nickel (Ⅱ) trinuclear compIexes, namely, [Mn3 (BZT ) (Phen )6] (ClO4 )3 (complex 1 ), [Mn (BZT)· (Nphen )6] (ClO4 )3 (complex 2), [Ni3 (BZT) (Phen)6] (ClO4 )3· 5H2O (complex3) and [Ni3 (BZT ) (Nphen )6] (ClO4 )3 (complex 4 ) (BZT = 1, 3, 5-benzenetricarboxylato, Phen = 1, 10-phenthroline, Nphen = 5-nitro-1, 10-phenanthroline )have been synthesized. The complexes were characterized using elemental analysis,IR and electronic reflection spectra. These complexes are proposed to have extended 1, 3, 5-benzenetricarboxylato-bridged structure and to consist of three manganese (Ⅱ) or three nickel(Ⅱ). The X-band ESR spectra of the complex 1 and complex 2were recorded at room temperature. The variable-temperature magnetic susceptibilities of complex 1 and complex 3 were measured over 4. 2-300 K. According to experimental results of the variable-temperature magnetic susceptibility, the magnetic interaction between the paramagnetic centers is too weak to be detected using the usual magnetic susceptibility technique. 展开更多
关键词 Manganese () complex nickel () complex 1 3 5-benzenetricarboxylic acid MAGNETISM
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Syntheses and Structures of Two Macrocyclic Nickel(Ⅱ) Complexes Bridging Benzene Polycarboxylic Acid
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作者 OU Guang-Chuan LI Wen-Yi +1 位作者 YUAN Xian-You LI Zhi-Zhang 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第5期749-756,共8页
Two complexes with formulas [Ni L][(Ni L)(IPA)2]·8H2O(1) and [(Ni L)(H2O)2] [(Ni L)(PMA)]·4H2O(2)(L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane,IPA2– = isophthalic anion,P... Two complexes with formulas [Ni L][(Ni L)(IPA)2]·8H2O(1) and [(Ni L)(H2O)2] [(Ni L)(PMA)]·4H2O(2)(L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane,IPA2– = isophthalic anion,PMA4– = 1,2,4,5-benzenetetracarboxylic anion) were synthesized and characterized by elemental analyses and IR spectra.The crystal structures were determined by X-ray diffraction.In complex 1,the [Ni L]^2+ bridged IPA^2– to give [(Ni L)(IPA)2]^2– monomer,and the [Ni L]^2+ bridged PMA4– to form a one-dimensional chain [(Ni L)(PMA)]n^2n– in complex 2.The [Ni L]^2+ and [(Ni L)(IPA)2]^2–/[(Ni L)(PMA)]^2– are connected through intermolecular hydrogen bonding to generate three-dimensional supramolecular structures. 展开更多
关键词 macrocyclic nickel complexes isophthalic 1 2 4 5-benzenetetracarboxylic
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Syntheses and Crystal Structures of Two Nickel(Ⅱ) Complexes [Ni(dmpzm)_2(L)]Cl·nH_2O (L=HCO_2,OAc;n=2,3;dmpzm=1,1'-Methylenebis(3,5-dimethyl-1H-pyrazole))
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作者 李巧云 虞虹 +2 位作者 陈阳 张勇 郎建平 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第5期598-604,共7页
Reactions of NiCl2-6H2O with dmpzm and formic or acetic acid at PH = 7 produced the two title compounds, [Ni(dmpzm)2(HCO2)]Cl·2H2O 1 and [Ni(dmpzm)2(OAc)]C2·H2O 2 (dmpzm = 1,1 '-methylenebis(3,5-d... Reactions of NiCl2-6H2O with dmpzm and formic or acetic acid at PH = 7 produced the two title compounds, [Ni(dmpzm)2(HCO2)]Cl·2H2O 1 and [Ni(dmpzm)2(OAc)]C2·H2O 2 (dmpzm = 1,1 '-methylenebis(3,5-dimethyl-lH-pyrazole)). 1 and 2 were characterized by elemental analysis, IR spectra, and thermogravimetric analysis. 1 crystallizes in the orthorhombic system, space group Pcca with a = 18.700(2), b = 8.6843(9), c = 18.098(2)A, V= 2939.1(5)A^3, Z = 4, Dc = 1.319 g/cm^3, T = 193 K, C23H37CINsNiO4, Mr = 583.75, F(000) = 1232, p(MoKa) = 0.792 cm^-1, S = 1.079, R = 0.0772 and wR = 0.1958 for 2265 observed reflections with I〉 2σ(I). 2 crystallizes in the orthorhombic system, space group Pcca with a = 17.011(3), b = 18.630(4), c = 19.300(4)A, V = 6117(2)A^3, Z = 8, Dc = 1.337 g/cm^3, T= 193(2) K, C24H41C1N8NiO5, Mr = 615.79, F(000) = 2608, μ(MoKa) = 0.768 cm^-1, S = 1.059, R = 0.0518 and wR = 0.1109 for 5124 observed reflections with I 〉 2σ(I). The Ni atoms in 1 or 2 are chelated by two dmpzm ligands and one formate or acetate anion, forming slightly distorted octahedral geometries. In the crystals of 1 or 2, intermolecular hydrogen bonding interactions result in the formation of 2D hydrogen-bonded frameworks. 展开更多
关键词 nickel complex 1 1'-methylenebis(3 5-dimethyl-lH-pyrazole) FORMATE acetate synthesis crystal structure
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Two Nickel(Ⅱ) Complexes Constructed by Novel Bis(3-methoxy-2-pyridyl)ether-6,6′-dicarboxylic Acid Ligand:Lattice Water Control of Structure
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作者 邓冬生 蒋媛媛 +3 位作者 兰红红 苗少斌 吉保明 杜晨霞 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第3期353-359,共7页
Under given conditions, two complexes of [Ni(H20)2BEDA]·2H2O 1 and [Ni(Py)2- BEDA]·6H2O 2 (BEDA = bis(3-methoxy-2-pyridyl)ether-6,6′-dicarboxylic acid) have been synthesized and characterized by ele... Under given conditions, two complexes of [Ni(H20)2BEDA]·2H2O 1 and [Ni(Py)2- BEDA]·6H2O 2 (BEDA = bis(3-methoxy-2-pyridyl)ether-6,6′-dicarboxylic acid) have been synthesized and characterized by elemental analysis and X-ray single-crystal diffraction. Crystal data for 1: C14H18NiN2O11, monoelinic C2/c, a = 14.3844(17), b = 12.9900(15), c = 9.6309(11) A, β = 104.3350(10)°, V= 1743.5(4) A3, Z = 4, Dc= 1.711 g/cm^3, F(000) = 928, μ = 1.179 mm^-1, Mr= 449.01, the final R = 0.0228 and wR = 0.0625. Crystal data for 2: C24H32NiN4O13, triclinic P1, a = 9.423(2), b = 11.863(3), c = 13.089(3) A, α = 91.511(3), β = 92.465(3), γ = 100.696(2)°, V = 1435.6(6) A^3, Z = 2, Dc= 1.488 g/cm^3, F(000) = 672, μ = 0.748 mm^-1, Mr= 643.25, the final R = 0.0400 and wR = 0.0975. Interestingly, in the two complexes, lattice water molecules dominate its crystal structures. Therefore, extensive intermolecular hydrogen bonds assemble 1 and 2 into 2D extended sheets and a 3D open framework, respectively. Furthermore, water molecules present in 2 are associated to form water clusters. 展开更多
关键词 nickel complex water cluster crystal structure bis(3-methoxy-2-pyridyl)ether-6 6′-dicarboxylic acid
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Syntheses,Spectral Characterization of the Nickel(Ⅱ) Complexes of Macrocyclic Dioxotetraamine and the Effect of the Functional Pendant Arms on their Properties 被引量:1
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作者 ZHANG Zhi Hui BU Xian He +2 位作者 CAO Xi Chuan WANG Chuan Zhong CHEN Rong Ti 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1999年第1期16-23,共8页
A series of new macrocyclic dioxo 13 aneN 4 bearing various functional pendants, 2 methylfuran (LF), 2 methylthiophene (LT), 2 methylpyridine (LP), have been synthesized and characterized, where dioxo 13 aneN ... A series of new macrocyclic dioxo 13 aneN 4 bearing various functional pendants, 2 methylfuran (LF), 2 methylthiophene (LT), 2 methylpyridine (LP), have been synthesized and characterized, where dioxo 13 aneN 4 is 1,4,7,10 tetraazacyclotridecane 11,13 dione. The solution behaviours of the nickel(Ⅱ) complexes have been studied by Uv vis, cyclic voltammetric techniques. The red shifts were observed for the absorption band maxima of the electronic spectra from NiLR 1 to NiLR 2 (R=2 methylfuran, 2 methylthiophene, 2 methylpyridine). The value of E 1/2 of the NiLR 2 is less than NiLR 1 and both of them are lower than that of the nickel(Ⅱ) complex of the unsubstituted ligand, and these reasons are discussed. 展开更多
关键词 macrocyclic dioxotetraamines nickel() complex functional pendant cyclic voltammetric techniques
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Synthesis, Crystal Structure and Thermal Stability of a Nickel(Ⅱ) Complex with Bicycle[2.2.1]-2-hepten-5,6-dicarboxylic Acid 被引量:5
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作者 李薇 李玉林 +1 位作者 李昶红 谭雄文 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第9期1279-1282,共4页
The nickel complex {Ni(2,2-bipy)(H2O)3[C8H11O2(COO)]}(H2O)3 with bicycle-[2.2.1]-2-hepten-5,6-dicarboxylic acid [C7H8(COOH)2] and 2,2'-bipyridine (bipy) as ligands has been synthesized and characterized. ... The nickel complex {Ni(2,2-bipy)(H2O)3[C8H11O2(COO)]}(H2O)3 with bicycle-[2.2.1]-2-hepten-5,6-dicarboxylic acid [C7H8(COOH)2] and 2,2'-bipyridine (bipy) as ligands has been synthesized and characterized. It crystallizes in monoclinic, space group P , with a = 0.74975(3), b = 1.20309(4), c = 1.30593(4) nm, α = 109.861(2), β = 98.519(2), γ = 90.575(2)o, V = 1.09337(7) nm3, Dc = 1.552 g/cm3, Z = 2, F(000) = 524, the final GOOF = 1.064, R = 0.0397 and wR = 0.1171. The crystal structure shows that the nickel ion is coordinated with four oxygen atoms from one bicycle[2.2.1]-2-hepten-5,6-dicarboxylic acid molecule and three water molecules and two nitrogen atoms from the 2,2′-bipyridine molecule, forming a distorted octahedral coordination geometry. The result of TG analysis shows that the title complex is stable under 200.0 ℃. 展开更多
关键词 nickel complex crystal structure thermal stability analysis
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Hydrothermal Synthesis and Crystal Structure of a New One-dimensional Nickel(Ⅱ) Complex with 2-Pyridinecarboxyic Acid and 4,4′-Bipyridine Ligands 被引量:4
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作者 李秀梅 牛艳玲 +3 位作者 王庆伟 刘博 赵霞 李丹 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第3期321-324,共4页
A new metal-organic coordination polymer [Ni[(2-pya)2(4,4′-bipy)]n·6nH2O (2-pya = 2-pyridinecarboxylic acid, 4,4′-bipy = 4,4′-pyridine) 1 has been hydrothermally synthesized and structurally characterize... A new metal-organic coordination polymer [Ni[(2-pya)2(4,4′-bipy)]n·6nH2O (2-pya = 2-pyridinecarboxylic acid, 4,4′-bipy = 4,4′-pyridine) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, TG and single-crystal X-ray diffraction. The complex crystallizes in tetragonal, space group I4 1/α with a = b = 22.5642(19), c = 10.7118(18) A, V = 5453.8(11) A^3, C22H28N4NiO10, Mr= 567.19, Dc = 1.382 g/cm^3, μ(MoKα) = 0.769 mm^-1, F(000) =2368, Z = 8, the final R = 0.0572 and wR = 0.1254 for 1401 observed reflections (I 〉 2σ(I)). It exhibits a one-dimensional chain-like structure by mixed ligands of 2-pyridinedicarboxylic acid and 4,4′-pyridine. 展开更多
关键词 2-pyridinecarboxylic acid nickel complex crystal structure
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Synthesis,Crystal Structure and Fluorescence Property of a New Trinuclear Nickel(Ⅱ) Complex Bridged by 2,6-Pyridine Dicarboxylic Acid 被引量:2
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作者 许志锋 邝代治 +2 位作者 刘梦琴 张复兴 王剑秋 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第6期977-981,共5页
A new trinuclear nickel complex,[Ni3(pdc)3(2,2'-bipy)3(H2O)2]·2H2O(H2pdc = pyridine 2,6-dicarboxylic acid,2,2'-bipy = 2,2'-bipyridine) has been hydrothermally synthesized and characterized by IR,elemen... A new trinuclear nickel complex,[Ni3(pdc)3(2,2'-bipy)3(H2O)2]·2H2O(H2pdc = pyridine 2,6-dicarboxylic acid,2,2'-bipy = 2,2'-bipyridine) has been hydrothermally synthesized and characterized by IR,elemental analysis and X-ray diffraction methods.Crystal data for this complex:monoclinic,space group P21/n,a = 21.206(4),b = 10.002(2),c = 28.066(6),β = 108.18(3)°,C51H41N9Ni3O16,Mr = 1212.06,V = 5.656(2) nm3,Dc = 1.423 g·cm-3,μ(MoKα) = 1.062 mm-1,Z = 4,F(000) = 2488,GOOF = 1.034,the final R = 0.0543 and wR = 0.1237 for 6149 observed reflections with Ⅰ 〉 2σ(Ⅰ).In the complex,three nickel(Ⅱ) ions are bridged by the pyridine 2,6-dicarboxylic acid groups,and all nickel(Ⅱ) ions are seven-coordinated by nitrogen atoms of 2,2'-bipyridine and pyridine 2,6-dicarboxylic acid and oxygen atoms from pyridine 2,6-dicarboxylic and water to adopt a severely distorted pentagonal bipyramidal geometry.The emission and excitation peaks of the complex in ethanol solutions are located at 336 and 316 nm,respectively. 展开更多
关键词 nickel complex hydrothermal synthesis crystal structure pyridine 2 6-dicarboxylic acid fluorescene property
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Hydrothermal Synthesis, Crystal Structure and Properties of One Binuclear Nickel(Ⅱ) Complex with 3-(2-Pyridiyl)-1H-1,2,4-triazole 被引量:2
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作者 李昶红 李薇 +1 位作者 李安伍 谭雄文 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2018年第6期1004-1008,共5页
A new binuclear nickel(Ⅱ) complex [Ni_2(C_7 N_4 H_5)_3(C_9 H_9 O_2)]n has been hydrothermally synthesized with nickel sulfate, 3-(pyridin-2-yl)-1H-1,2,4-triazole and 3,5-dimethylbenzoic acid(3,5-DMBA). It c... A new binuclear nickel(Ⅱ) complex [Ni_2(C_7 N_4 H_5)_3(C_9 H_9 O_2)]n has been hydrothermally synthesized with nickel sulfate, 3-(pyridin-2-yl)-1H-1,2,4-triazole and 3,5-dimethylbenzoic acid(3,5-DMBA). It crystallizes in the triclinic space group P1 with a = 11.5769(7), b = 12.3115(7), c = 12.6431(7) A, α = 81.4860(10)o, β = 64.2830(10)o, γ = 63.7130(10)o, V = 1453.45(15) A^3, D_c = 1.604 g/cm^3, Z = 2, F(000) = 720, the final GOOF = 1.048, R = 0.0285 and wR = 0.0628. The crystal structure shows that the whole molecule consists of two nickel ions bridged by three μ_2-η~1:η~0-3-(pyridin-2-yl)-1,2,4-triazole anions. The coordination environment of Ni(Ⅱ) ion is NiO_2 N_4 and NiN_5, giving a distorted octahedral geometry and square pyramidal geometry respectively. The luminescence and thermal properties of the complex were investigated. 展开更多
关键词 binuclear nickel complex LUMINESCENCE thermal properties
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Synthesis,Crystal Structure and Magnetic Properties of an Oxalato-bridged Dinickel(Ⅱ) Complex with Nitronyl Nitroxide Radicals 被引量:1
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作者 王玉芳 鞠丰阳 王利亚 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第1期51-56,共6页
A new oxalato-bridged dinickel(Ⅱ) complex [Ni2(NIT-MeImz)4(C2O4)](Ac)2·8H2O has been synthesized and characterized structurally as well as magnetically.It crystallizes in monoclinic,space group C2/c with... A new oxalato-bridged dinickel(Ⅱ) complex [Ni2(NIT-MeImz)4(C2O4)](Ac)2·8H2O has been synthesized and characterized structurally as well as magnetically.It crystallizes in monoclinic,space group C2/c with a=24.608(4),b=21.399(3),c=17.992(3),β=131.680(2)°,V=7076(2)3,C50H86N16Ni2O24,Mr=1412.77,Z=4,Dc=1.326 g/cm3,μ(MoKα)=0.614 mm-1,F(000)=2984,R=0.0751 and wR=0.1791 for 2956 observed reflections with Ⅰ&gt;2σ(Ⅰ).X-ray analysis reveals that the crystal structure consists of [Ni2(NIT-MeImz)4(C2O4)]2+ moiety and two Ac^- anions. Each nickel(H) ion is six-coordinated with a distorted octahedral geometry: two nitrogen atoms and two oxygen atoms from NIT-Melmz together with two other oxygen atoms from the oxalato ion. The 2-D net structure is formed and arranged through intermolecular H-bonding interactions. Magnetic measurements show antiferromagnetic interactions for this complex. 展开更多
关键词 nickel complex nitronyl nitroxide radical antiferromagnetic interactions
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Crystal Structure, Spectroscopic Characterization, and Electrochemical and Thermal Stability Properties of a Dinuclear Nickel(Ⅱ) Complex 被引量:1
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作者 李昶红 陈志辉 +1 位作者 李衡峰 李薇 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第7期1093-1098,共6页
A new nickel(Ⅱ) complex Ni2(L)2(2,2'-bipy)2·5.5H2O with methy-bicycle[2.2.1]hept-5-ene-2,3-dicarboxylic acid(H2L) and 2,2?-bipyridine(2,2'-bipy) as ligands has been synthesized in the mixed solvent ... A new nickel(Ⅱ) complex Ni2(L)2(2,2'-bipy)2·5.5H2O with methy-bicycle[2.2.1]hept-5-ene-2,3-dicarboxylic acid(H2L) and 2,2?-bipyridine(2,2'-bipy) as ligands has been synthesized in the mixed solvent DMF and water(v:v = 5:2). It crystallizes in the triclinic space group P1 with a = 10.414(2), b = 12.884(3), c = 16.176(4) A, α = 70.715(5), β = 80.599(5), γ = 77.383(6)°, V = 1989.4(8) A^3, Dc = 1.531 g/cm^3, Z = 2, F(000) = 958, GOOF = 1.028, the final R = 0.0808 and w R = 0.2036. The crystal structure shows that the whole molecule consists of two independent dinuclear units, in which two nickel ions are bridged by two μ2-η1:η0 3-carboxylate groups of L2- anions. The coordination environment of Ni(Ⅱ) ion is Ni N2O3, giving a distorted square pyramidal geometry. The thermal stability and electrochemical properties of the complex were investigated. 展开更多
关键词 nickel complex electrochemical and thermal stability properties
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Synthesis, Characterization, Crystal Structure and Antibacterial Activities of a Nickel(Ⅱ) Complex with 2'-(2-Thienylidene)-hydroxybenzoylhydrazide
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作者 YANG Jian-Guo LI Fang +1 位作者 PAN Fu-You JIA Wen-Ping 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第9期1071-1075,共5页
In the ethanol solvent, a nickel(Ⅱ) complex Ni(C12H10N2O2S)2 upon reaction of 2'-(2-thienylidene)-hydroxybenzoylhydrazide with nickel acetate was synthesized, and its structure was characterized by IR, UV, ele... In the ethanol solvent, a nickel(Ⅱ) complex Ni(C12H10N2O2S)2 upon reaction of 2'-(2-thienylidene)-hydroxybenzoylhydrazide with nickel acetate was synthesized, and its structure was characterized by IR, UV, elemental analysis and X-ray diffraction analysis. The crystal belongs to monoclinic system, space group C2/c with a = 22.052(3), b = 5.9681(6), c = 18.522(2)A , β = 110.679(4)°, V = 2280.6(4)A^3, Z = 4, Mr = 551.27, μ = 1.606 mm^-1, Dc = 1.075 g/cm^3, F(000) = 1136 and Rint = 0.0556. The nickel(Ⅱ ) atom in the compound is four-coordinated with two nitrogen atoms from amide and two oxygen atoms from keto group. The biological activities have been measured, show- ing the compound exhibits better anti-bacterial activity than the ligand. 展开更多
关键词 nickel complex 2'-(2-thienylidene)-hydroxybenzoylhydrazide crystal structure antibacterial activities
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Synthesis and X-ray Structure of a Binuclear Nickel(Ⅱ) Complex of Nickel(Ⅱ) Perchlorate and 2,2'-Bipyridyl with N,N'-Bis(2-aminoethyl)oxamido Nickel(Ⅱ)
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作者 LIU Chang-rang JIA Lu +1 位作者 WEI Ping-rong FAN Yao-ting and HAN Qiang(Department of Chernistry , Zhengzhou University, Zhengzhou , 450052) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1994年第4期353-359,共7页
SynthesisandX-rayStructureofaBinuclearNickel(Ⅱ)ComplexofNickel(Ⅱ)Perchlorateand2,2'-BipyridylwithN,N'-Bis(2-... SynthesisandX-rayStructureofaBinuclearNickel(Ⅱ)ComplexofNickel(Ⅱ)Perchlorateand2,2'-BipyridylwithN,N'-Bis(2-aminoethyl)oxamid... 展开更多
关键词 Synthesis. Structure Binuclear nickel( ) complex
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Synthesis,Crystal Structure and Theoretical Calculations of a Nickel(Ⅱ) Coordination Polymer Assembled by 4,4'-Oxydibenzoic Acid and 1,3-Bis(imidazol-1-ylmethyl)-benzene Ligands 被引量:7
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作者 PAN Ya-Ru SUN Ming LI Xiu-Mei 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第5期710-718,共9页
A new metal-organic coordination polymer [Ni(oba)(mbix)(H2O)]n·n H2O(H2oba = 4,4‘-oxydibenzoic acid,mbix = 1,3-bis(imidazol-1-ylmethyl)-benzene) 1 has been hydrothermally synthesized and structurally c... A new metal-organic coordination polymer [Ni(oba)(mbix)(H2O)]n·n H2O(H2oba = 4,4‘-oxydibenzoic acid,mbix = 1,3-bis(imidazol-1-ylmethyl)-benzene) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis,IR,TG,UV and single-crystal X-ray diffraction.Green crystals crystallize in the triclinic system,space group P1 with a = 10.1915(18),b = 11.415(2),c = 12.314(2)A,α = 74.263(3),β = 84.545(2),γ = 74.369(3)o,V = 1327.6(4) A,C28H26N4 Ni O7,Mr = 589.24,Dc = 1.474 g/cm3,F(000) = 612,Z = 2,μ(Mo Kα) = 0.786 mm-1,the final R = 0.0332 and w R = 0.0869 for 4622 observed reflections(I 〉 2σ(I)).The structure of 1 exhibits a one-dimensional chain-like structure.In addition,natural bond orbital(NBO) analysis was performed by the PBE0/LANL2 DZ method in Gaussian 03 Program.The calculation results show obvious covalent interaction between the coordinated atoms and Ni(Ⅱ) ion. 展开更多
关键词 nickel complex 4 4'-oxydibenzoic acid crystal structure natural bond orbital
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Synthesis and Crystal Structure of Bis(S-methyl-β-N- (4-dimethylaminophenyl)methlenedithiocarbazate) Nickel (Ⅱ) 被引量:2
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作者 BIAN Zheng-Wei(Chemistry Department, Jiangsu Educational Institute. Nanjing, 210013)DUAN Chun-Ying THOMAS C. W. Mak(Coordination Chemistry Institute and State Key Laboratory ofCoordination Chemistry, Nanjing University, Nanjing 210093) 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1997年第4期307-310,共4页
Reaction of nickel (Ⅱ) acetate with S-methyl-β-N-(4 dimethy-laminophenyl) methlenedithiocarbazate gave a mononuclear complex [Ni (C11H14N3S2)2]. Crystal of the title compound belongs to monoclinic systern,space grou... Reaction of nickel (Ⅱ) acetate with S-methyl-β-N-(4 dimethy-laminophenyl) methlenedithiocarbazate gave a mononuclear complex [Ni (C11H14N3S2)2]. Crystal of the title compound belongs to monoclinic systern,space group C2/cwith cell parameters a= 18. 785 (1), b= 17. 274 (1 ), c= 8. 344 (1 ) A, β= 108. 64(2)°, V= 2565(1 ) A3, Z=4, Mr= 563. 36, Dc= 1. 459 g/cm3; μ=10. 05 cm-1 andF(000) = 1176. The final refinement with 2179 observed reflections is converged withR= 0. 044 and R.= 0. 069. X-ray crystal structure analysis revealed that the coordina-tion geometry of Ni (Ⅱ) is a square-planar with two equivalent Ni -N and Ni - Sbonds. The Schiff-base ligand loses a proton from its tautomeric thiol form and is coor-dinated to the nickel atom via the mercapto sulphur and the β-nitiogen. 展开更多
关键词 sulphur-nitrogen donor Schiff-base nickel () complex crystal structure
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Crystal Structure and Characterization of 2-N-(2-Hydroxy-benzylidene) Furanmethanoamine Nickel(II) Complex 被引量:1
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作者 WANG Jun XU Hong +1 位作者 ZHOU Hua WEI Ping 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第8期909-912,共4页
The Ni(Ⅱ) complex with ligand 2-N-(2-hydroxy-benzylidene) furanmethanoamine has been synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction. It crystallizes in the monoclinic... The Ni(Ⅱ) complex with ligand 2-N-(2-hydroxy-benzylidene) furanmethanoamine has been synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group C2/c with a = 2.0280(4), b =0.57700(12), c = 1.7340(4) nm, β = 94.74(3)°, Z = 4, Dc = 1.508 g/cm^3, the final R = 0.0434 and wR = 0.1112 for 1843 observed reflections with 1 〉 2σ(I). X-ray analysis revealed that the Ni(Ⅱ) ion is coordinated by two nitrogen atoms of Schiff base and two oxygen atoms of salicylaldehyde in the equatorial plane, and the coordination geometry can be described as a square. 展开更多
关键词 nickel complex SALICYLALDEHYDE crystal structure furfuryl amine Schiff base
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Synthesis, Crystal Structure and Electrochemistry Properties of a (N,N'-Ethylene-bis(salicylaldiminato)) Nickel(II) Complex, [Ni_2(salen)_2]·NCS·NH_4 被引量:1
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作者 冯勋 杜仲祥 +1 位作者 冶保献 崔付娜 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第9期1033-1038,共6页
A new Ni(Ⅱ) complex [Ni2(salen)2]·(NCS)·NH4 (salen = N,N'-bis(salicylideneamino)ethanato) has been prepared and structurally characterized by elemental analysis, IR spectra and single crystal X-r... A new Ni(Ⅱ) complex [Ni2(salen)2]·(NCS)·NH4 (salen = N,N'-bis(salicylideneamino)ethanato) has been prepared and structurally characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. It crystallizes in the orthorhombic system, space group Pbca with a = 16.8725(13), b = 19.0046(15), c = 20.0583(16)A, Z = 8, V = 6431.8(9)A^3, C33H32N6Ni2O4S1, Mr = 726.13, Dc = 1.500 g/cm^3, F(000) = 3008, μ = 1.284 mm^-1, the final R = 0.0394 and wR = 0.0767 for 4449 observed reflections with I 〉 2σ(I). The complex involves a N,N'-ethylene-bis(salicylaldiminato) Schiff base, an isothiocyanato anion and an ammonium cation. The nickle(II) ion adopts a distorted square coordination geometry with N2O2 set of Schiff base ligand. The complexes are linked into a dimmer via intermolecular hydrogen bonds and the [Ni(salen)] moieties are connected together to form a 2-D layer structure by intermolecular N-H…O hydrogen bonds and π-π stacking. Cyclic-voltammetry method was used to characterize electrochemically the complex. 展开更多
关键词 crystal structure nickel complex Schiff base hydrogen bond
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