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Syntheses,Structures and Luminescent Properties of Two Zinc Complexes Containing N-P-Acetamidobenzenesulfonyl-glycine Acid Ligand
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作者 王利亚 王永伟 +1 位作者 王新德 马录芳 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第8期983-989,共7页
Using N-P-acetamidobenzenesulfonyl-glycine acid (abbreviated as abglyH2) as a ligand, two zinc(II) complexes [Zn(abglyH)2(bipy)2(H2O)2], (1) and {[Znz(abgly)2(bipy)2(H2O)2]. 2(H2O)}n (2) (bipy =... Using N-P-acetamidobenzenesulfonyl-glycine acid (abbreviated as abglyH2) as a ligand, two zinc(II) complexes [Zn(abglyH)2(bipy)2(H2O)2], (1) and {[Znz(abgly)2(bipy)2(H2O)2]. 2(H2O)}n (2) (bipy = 4,4'-bipyridine) have been synthesized under mild conditions and characterized by IR, elemental analysis and X-ray diffraction analysis. Complex 1 is a monomeric compound, which is further assembled by intermolecular hydrogen bonds and π-π interactions into a 3-D supramolecular network. Complex 2 adopts a one-dimensional double chain structure and is further linked by hydrogen bonds to form a 2-D structure. Fluorescent analysis shows that complex 1 has an emissive maximum at 337 nm and complex 2 exhibits an emissive maximum at 339 nm in the solution state at room temperature. 展开更多
关键词 N-P-acetamidobenzenesulfonyl-glycine acid zinc complexes supramolecularstructure fluorescent analysis
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Syntheses, Characterizations, Crystal Structures and Antibacterial Activities of Two Zinc(II) Complexes with a Schiff Base Derived from o-Vanillin and p-Toluidine 被引量:3
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作者 余玉叶 赵国良 温一航 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第12期1395-1402,共8页
Two new zinc(Ⅱ) complexes, [Zn2L2Ch].2[ZnL(CH3OH)Cl2] 1 and [ZnL2(NO3)2] 2, were synthesized by reacting ZnX2.nH2O (X = Cl^-, NO3^-) and a Schiff base ligand 2-[(4-methylphenylimino)methyl]-6-methoxyphenol ... Two new zinc(Ⅱ) complexes, [Zn2L2Ch].2[ZnL(CH3OH)Cl2] 1 and [ZnL2(NO3)2] 2, were synthesized by reacting ZnX2.nH2O (X = Cl^-, NO3^-) and a Schiff base ligand 2-[(4-methylphenylimino)methyl]-6-methoxyphenol (C15HIsNO2, L) which was obtained by the condensation of o-vanillin (2-hydroxy-3-methoxybenzaldehyde) with p-toluidine. Both 1 and 2 were characterized by single-crystal X-ray diffraction technique, elemental analysis, molar conductance, FT-IR, UV-Vis, IH-NMR spectra and thermogravimetrie analysis. The Schiff base ligand and its zinc(Ⅱ) complexes have been tested in vitro to evaluate their antibacterial activity against bacteria, viz., Escherichia Coli, Staphylococcus aureus and Bacillus Subtilis. The results show that these complexes have higher activity than the corresponding free Schiff base ligand against the same bacteria. 展开更多
关键词 O-VANILLIN P-TOLUIDINE Schiff base zinc(Ⅱ) complex crystal structure antibacterial activities
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Synthesis and Characterization of Two Binuclear Macrocyclic Zinc(Ⅱ) Complexes by Anion Exchange 被引量:2
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作者 欧光川 黄中文 +2 位作者 潘泽毅 周东来 袁先友 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第6期903-908,共6页
Two macrocyclic zinc(Ⅱ) complexes {[ZnL(VO3)2]·0.33H2O}n(1) and [ZnL(H2O)2][Ni(CN)4](2)(L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane) have been obtained from the reactions of [Z... Two macrocyclic zinc(Ⅱ) complexes {[ZnL(VO3)2]·0.33H2O}n(1) and [ZnL(H2O)2][Ni(CN)4](2)(L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane) have been obtained from the reactions of [ZnL](ClO4)2 with NH4VO3 and K2[Ni(CN)4], respectively, and structurally characterized by elemental analysis, IR, XRPD, TG and X-ray diffraction. Single-crystal X-ray diffraction analyses indicated that the Zn(Ⅱ) atom lies on an inversion center and is octahedrally coordinated by four nitrogen atoms of the tetradentate macrocyclic ligand in the equatorial plane and two oxygen atoms of [VO4] tetrahedra in the axial positions in 1, and two oxygen atoms of two water molecules in 2. Complex 1 shows a three-dimensional structure, which is constructed by the links of [VO3]nn- chains with [ZnL]2+, forming one-dimensional channels occupied by vip water molecules. The monomers of [ZnL(H2O)2]2+ and [Ni(CN)4]2- are connected through the intermolecular hydrogen bonds to form a two-dimensional sheet in complex 2. 展开更多
关键词 macrocyclic zinc(Ⅱ) complexes BINUCLEAR VANADIUM anion exchange
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Hydrothermal Syntheses,Crystal Structures,and Characterization of Two Zinc(Ⅱ)Complexes Containing Flexible Bis(benzimidazole)Ligands 被引量:2
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作者 刘晓兵 张泽婷 +3 位作者 王艳彦 刘蕊 赵永 崔广华 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第11期1745-1753,共9页
Two zinc(II) complexes, namely, [Zn(L1)Cl2]2 (1) and {[Zn(L2)(tbta)]·3H2O}n (2) (L1 = 1,3-bis(2-methylbenzimidazol-1-ylmethyl)benzene, H2tbta = tetrabromoterephthalic acid, L2 = 1,3-bis(2-methylbe... Two zinc(II) complexes, namely, [Zn(L1)Cl2]2 (1) and {[Zn(L2)(tbta)]·3H2O}n (2) (L1 = 1,3-bis(2-methylbenzimidazol-1-ylmethyl)benzene, H2tbta = tetrabromoterephthalic acid, L2 = 1,3-bis(2-methylbenzimidazol-1-yl)-2-propanol) have been successfully obtained under hydrothermal conditions. Complex 1 displays binuclear structure which is further extended into a 1D supramolecular chain through π–π stacking. Complex 2 features 2D (4,4) network based on L2/tbta2– double linker. The thermal stability, fluorescence properties and catalytic activities of two complexes for degradation of Methyl orange in a Fenton-like process were discussed. 展开更多
关键词 bis(benzimidazole) catalytic property crystal structure fluorescence property zinc(Ⅱ) complex
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Zinc bis-Schiff base complexes: Synthesis, structure, and application in ring-opening polymerization of rac-lactide 被引量:1
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作者 Zhong-Ran Dai Chang-Feng Yin +1 位作者 Cheng Wang Jin-Cai Wu 《Chinese Chemical Letters》 SCIE CAS CSCD 2016年第11期1649-1654,共6页
A series of bis-ligated zinc complexes supported by Schitt base ligands were successfully synthesized and characterized by 1 H, 13C NMR, elemental analysis, and X-ray crystallography. These zinc complexes can be used ... A series of bis-ligated zinc complexes supported by Schitt base ligands were successfully synthesized and characterized by 1 H, 13C NMR, elemental analysis, and X-ray crystallography. These zinc complexes can be used as catalysts for the polymerization of rac-lactide in solution as well as in molten lactide. The results show that all catalysts exhibited high catalytic activity and obtained moderate heterotactic PLAs with the expected molecular weight. Complex 1 can catalyze the polymerization of rac-lactide under controllable conditions with living and immortal character in toluene solution. In addition, the steric hindrance and electronic effects has a great influence on the catalytic activity and selectivity of catalysts. 展开更多
关键词 Rac-lactide Catalyst zinc complex Ring-opening polymerization
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Synthesis, Structure of Zinc Complexes Containing Sulfon- ylated Binaphtholate Ligands and Their Catalytic Activities towards Ring-Opening Polymerization of Lactide and ε-Caprolactone
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作者 周双六 姜永要 +5 位作者 谢陶 吴章栓 周凌敏 许文静 张丽军 王绍武 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2012年第9期2176-2182,共7页
Reaction of sulfonylated binaphthol [2-hydroxy-2'-tosyloxy-l,l-binaphthyl (la, Ts-Binol) or 2-hydroxy-2'- (phenylsulfonyloxy)-l,l-binaphthyl (lb, Ps-Binol)] with 1 equiv, of ZnEt2 afforded zinc complexes [(Ys... Reaction of sulfonylated binaphthol [2-hydroxy-2'-tosyloxy-l,l-binaphthyl (la, Ts-Binol) or 2-hydroxy-2'- (phenylsulfonyloxy)-l,l-binaphthyl (lb, Ps-Binol)] with 1 equiv, of ZnEt2 afforded zinc complexes [(Ys-Binol)ZnEt]2 (2a) and [(Ps-Binol)ZnEt]2 (2b). Further reaction of zinc complexes 2a and 2b with benzyl alco- hol (BnOH) gave the zinc benzyloxide [(Ts-Binol)2Zn2(OBn)2]2 (3a) and [(Ps-Binol)2Znz(OBn)2]2 (3b). Alterna- tively, the zinc benzyloxides 3a and 3b could also be obtained by reaction of compound la or lb with Zn(OBn)2 (in situ reaction of ZnEt2 and BnOH). The complexes were fully characterized by elemental analyses and spectroscopic analyses, and complexes 2a, 2b and 3a were further characterized by single-crystal X-ray analyses. The catalytic activities of these zinc complexes towards ring-opening polymerization of ε-caprolactone and D,L-lactide were studied. 展开更多
关键词 Keywords zinc complex ring-opening polymerization BINAPHTHOL Ε-CAPROLACTONE D L-lactide
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Syntheses and Crystal Structures of Ternary Complexes of Zinc(Ⅱ) and Cadmium(Ⅱ) with 3-Aminobenzoic Acid and 1,10-Phenanthroline
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作者 谭安治 韦友欢 +2 位作者 陈自卢 梁福沛 胡瑞祥 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第4期417-423,共7页
Two new ternary complexes [Zη(3-aba)2(phen)]·2.58H2O 1 and {[Cd(3-aba)- (phen)2]·(NO3)·(1.5H2O) }n 2 (3-aba = 3-aminobenzoic acid anion, phen = 1,10-phenanthroline) were synthesized and c... Two new ternary complexes [Zη(3-aba)2(phen)]·2.58H2O 1 and {[Cd(3-aba)- (phen)2]·(NO3)·(1.5H2O) }n 2 (3-aba = 3-aminobenzoic acid anion, phen = 1,10-phenanthroline) were synthesized and characterized by elemental analysis, IR, UV spectrum and X-ray diffraction. Complex 1 crystallizes in the rhombohedral system, space group R3 with a = 3.5733(3), b = 3.5733(3), c = 1.1231(2) nm; V= 12.419(3) nm^3, C26H25.17NaO6.58Zn, Mr= 564.37, Z= 18, F(000) = 5253, μ= 0.937 mm^-1, Dc = 1.358 g/cm^3, R = 0.0668 and wR = 0.1690 for 2424 observed reflections (I〉 2σ(I)). Complex 2 belongs to the tetragonal system, space group P4/ncc with a = 2.88451(10), b = 2.88451(10), c = 1.55571(11) nm, V= 12.9441(11) nm^3, C31H25CdN6O6.50, Mr = 697.97, Z = 16, F(000) = 5648,μ=0.727 mm^-1, Dc= 1.433 g/cm^3, R = 0.0607 and wR = 0.1742 for 3468 observed reflections (I 〉 2σ(I)). Complex 1 displays a mononuclear structure. The carboxylate group of 3-aminobenzoic acid anion coordinates to Zn(Ⅱ) in a chelating bidentate mode, and the nitrogen atom of the ligand does not involve in coordination. Complex 2 exhibits a one-dimensional chain structure with 3-aminobenzoic acid anion coordinating to Cd(Ⅱ) in a μ2-bridging mode through its nitrogen atom and one of its oxygen atoms. 展开更多
关键词 3-aminobenzoic acid zinc complex cadmium complex crystal structure
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Synthesis and Uncommon Structural Characterization of Novel Zinc and Cadmium Complexes with Imino Nitroxide Radical
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作者 王淑萍 高东昭 +2 位作者 廖代正 姜宗慧 阎世平 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第4期472-476,共5页
Two novel complexes {[Zn(IM4py)2(tp)(H2O)]2H2O}. 1 and {[Cd(IM4py)2(tp)- (H2O)]1.25H2O},, 2 (IM4py = 2-(4'-pyridinyl)-4,4,5,5-tetramethylimidazoline-l-oxyl and tp = terephthalate dianion) have been sy... Two novel complexes {[Zn(IM4py)2(tp)(H2O)]2H2O}. 1 and {[Cd(IM4py)2(tp)- (H2O)]1.25H2O},, 2 (IM4py = 2-(4'-pyridinyl)-4,4,5,5-tetramethylimidazoline-l-oxyl and tp = terephthalate dianion) have been synthesized and characterized by elemental analyses, IR spectrum and single-crystal X-ray diffraction. Crystal data for complex I: monoclinic, space group C2/c, a = 20.648(7), b = 12.130(4), c = 14.036(4) A, β = 106.351(5)°, C32H42N6O9Zn, Mr = 720.09, V = 3373.3(2) A3, Z= 4, Dc = 1.418 g/cm^3μt(MoKα) = 0.790 mm^-1, F(000) = 1512, the final R = 0.0407 and wR = 0.0894 for 3480 independent reflections with Rint = 0.0432. Crystal data for complex 2: monoclinic, space group C2/c, a = 21.332(6), b = 12.063(3), c = 14.246(4) A, β = 106.704(4)°, C32H40.50N6O8.25Cd, Mr = 753.60, V= 3511.2(2) A^3, Z = 4, Dc = 1.426 g/cm^3,μ(MoKα) = 0.679 mm^--1, F(000) = 1554, the final R = 0.0419 and wR = 0.0961 for 3627 independent reflections with Rint = 0.0440. The framework structures of complexes 1 and 2 are 3-D networks via the hydrogen bonds among 1-D chains. The notable characteristics of the two complexes are that the coordination polyhedron of Zn(Ⅱ) adopts a rare distorted five-coordinate square pyramidal geometry in 1, and the Cd(Ⅱ) complex exhibits an unusual distorted seven-coordinate pentagonal bipyramid in 2. 展开更多
关键词 imino nitroxide radical zinc and cadmium complexes square pyramid pentagonal bipyramid
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Hydrothermal Synthesis and Crystal Structure of a Zinc Complex:[Zn_(2.5)(phen)(BDC)_2(OH)] (phen = 1,10-Phenanthroline, BDC = Benzene-1,4-dicarboxylic Acid) 被引量:10
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作者 王庆伟 李秀梅 史林芳 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第1期11-14,共4页
A metal-organic coordination polymer [ZnE.s(phen)(BDC)2(OH)]2 (phen = 1,10- phenanthroline, BDC = benzene-1,4-dicarboxylic acid) 1 has been hydrothermally synthesized and structurally characterized by single-c... A metal-organic coordination polymer [ZnE.s(phen)(BDC)2(OH)]2 (phen = 1,10- phenanthroline, BDC = benzene-1,4-dicarboxylic acid) 1 has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, elemental analyses and IR spectroscopy. The complex crystallizes in the triclinic system, space group PI with a = 11.199(2), b = 11.593(2), c = 11.865(3)/A, α= 99.330(1), β = 111.506(1), γ = 104.804(1)^o, V= 1328.4(5)A^3, Dc= 1.722 g/cm^3, Z = 1, Mr = 1377.82, F(000) = 692,μ(MoKa) = 2.306 mm^-1, S = 1.093, R= 0.0281 and wR = 0.0756 for 4179 observed reflections (I 〉 2σ(/)). The coordination polyhedron around Zn(II) can be described as a tetrahedron, trigonal bipyramid and octahedron. It is worth noting that the crystal structure of 1 is composed of tetranuclear zinc clusters linked by {ZnO6} units. 展开更多
关键词 zinc complex hydrothermal synthesis crystal structure tetranuclear zinc cluster
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Synthesis and Crystal Structure of Zinc(II) Complex with Isonicotinate Containing a Three-dimensional Hydrogen-bond Network 被引量:8
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作者 沈良 刘加庚 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2001年第4期253-255,共3页
A zinc complex, [Zn(iso)_2(H_2O)_4](iso=C_6H_4NO_2^-), was synthesized and characterized by elemental analysis, thermal analysis and IR spectrum studies. The crystal structure of the complex was determined by X-ray di... A zinc complex, [Zn(iso)_2(H_2O)_4](iso=C_6H_4NO_2^-), was synthesized and characterized by elemental analysis, thermal analysis and IR spectrum studies. The crystal structure of the complex was determined by X-ray diffraction. The crystal crystallizes in the triclinic system, molecular formula ZnC12H16N2O8, Mr=381.64, space group P with a = 6.338(1), b =6.919(1), c=9.277(1), α=96.28(1), β=104.91(1), γ=112.85(1)°, V=352.12(9)?3, Z=1, Dc=1.80g?cm-3 and F(000)=196, μ =1.791mm-1. The crystal structure was solved by direct methods for final R=0.0204 and Rw=0.0542 for 1258 observed reflections with [Fo>4σ(Fo)]. The crystal structure reveals that zinc ion is trans-octahedral with two pyridyl nitrogens and two aque oxygens at the equational positions and two aqua oxygens at the axial positions. The complex forms a three-dimensional network through intermolecular hydrogen bonds. 展开更多
关键词 ISONICOTINATE zinc complex crystal structure H-bonded network
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A Series of Mononuclear Complexes Constructed from Transition Metals and Amino Acid Derived Ligands: Syntheses, Structures and Photoluminescence 被引量:6
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作者 李新发 曹荣 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第11期1439-1447,共9页
Eight neutral mononuclear complexes constructed from transition metals (M = Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ), Cd(Ⅱ)) and ligands N-(2-pyridylmethyl)-L-phenylalanine (L-Hpmpa) and N-(2-pyridylmethyl)-L... Eight neutral mononuclear complexes constructed from transition metals (M = Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ), Zn(Ⅱ), Cd(Ⅱ)) and ligands N-(2-pyridylmethyl)-L-phenylalanine (L-Hpmpa) and N-(2-pyridylmethyl)-L-tyrosine (L-Hpmtyr) have been synthesized by both hydrothermal and conventional room temperature reactions. Four of them have been structurally characterized by single-crystal X-ray diffractions. They are: [Co(L-pmpa)2·2H2O] 1, [Ni(L-pmpa)2·2H2O] 2, [Cu(L-pmpa)2·2H2O] 3 and [Cu(L-pmtyr)2·2H2O] 4. Single-crystal X-ray analysis, IR and elemental analysis revealed that complexes 1, 2 and 3 are isostructural. Powder X-ray diffraction, IR and elemental analysis revealed that complexes 4, 5 (Zn[L-pmtyr]2·2H2O), 6 (Cd[L-pmtyr]2·2H2O), 7 (Co[L-pmtyr]2·2H2O) and 8 (Ni[L-pmtyr]2·2H2O) are isostructural. The photoluminescence properties of L-Hpmtyr ligand, compounds 5 and 6 were also investigated. 展开更多
关键词 amino acid zinc complex cadmium complex PHOTOLUMINESCENCE
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Synthesis and Crystal Structure of Complex of Zinc(Ⅱ) with Schiff Base {Zn[CH_3O(O)-C_6H_3CH_3=NN=C(S)NH_2](DMF)}_2 被引量:3
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作者 崔学桂 胡清萍 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1994年第5期340-342,共3页
The title complex is a new binuclear Zn(Ⅱ) with chelate ligand of Schiff base containing S and N atom.The complex crystallizes in the orthorhombicspace group Pccn,with a=12.338(9),b=16.666(8),c=17.503(6),V=3599(6),Mr... The title complex is a new binuclear Zn(Ⅱ) with chelate ligand of Schiff base containing S and N atom.The complex crystallizes in the orthorhombicspace group Pccn,with a=12.338(9),b=16.666(8),c=17.503(6),V=3599(6),Mr=723.52,Z=4,Dx=1.34 g/cm3,μ=15.22 cm-1,F(000)=1488.The structure was solved by direct methods and the final R=0.078.The crystal consists of discrete molecules with symmetric center at the center of the fourmembered ring consisting of two Zn atoms and two O atoms. 展开更多
关键词 schiff base zinc complex synthesis crystal structure
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Synthesis and Crystal Structure of an Azide Bridged Binuclear Zinc(Ⅱ) Dimer Containing Taurine Schiff Base [Zn_2(C_8H_9N_2O_3S)_2·(N_3)_2·(H_2O)_2]_2·_2H_2O 被引量:3
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作者 JIANG Yi-Min LI Jia-Ming +1 位作者 XIE Fu-Qing WANG Yan-Fei 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第7期767-770,共4页
The title complex [Zn2L2(N3)2(H2O)2]·2H2O (L = N-(2-pyridylmethylidene) taurine) has been synthesized in a methanol-water solution. The crystal belongs to monoclinic, space group P2 1/C with a = 15.8064... The title complex [Zn2L2(N3)2(H2O)2]·2H2O (L = N-(2-pyridylmethylidene) taurine) has been synthesized in a methanol-water solution. The crystal belongs to monoclinic, space group P2 1/C with a = 15.8064(10), b = 10.5015(5), c = 17.3193(11) ,A, β= 111.314(2)°, V = 2678.2 (3) ,A ^3 C16H26N10O10S2Zn2, Mr = 713.33, Z = 4, DC = 1.769 g/cm^3, μ = 2.017 mm^-1 and F(000) = 1456. The asymmetric unit consists of two half-molecules of the complex and two water molecules. Four N and two O atoms form the coordination environment of each Zn atom, resulting in a distorted octahedral configuration. The two halves of each independent dimer are related by a crystallographic inversion centre, which lies at the centre of the ring formed by two Zn atoms and the coordinating atoms of the two azide anions. The average separation of Zn(Ⅱ)...Zn(Ⅱ) is 3.322 A. The molecules are linked by O-H...O hydrogen bonds, generating an interesting zigzag infinite chain structure in the ac plane. 展开更多
关键词 binuclear zinc complex N-(2-pyridylmethylidene)-taurine schiff base bridging azide crystal structure
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Synthesis and Crystal Structure of a Zinc(II) Complex with 2-(4′-Chlorine-benzoyl)-benzoic Acid and 1,10-Phenanthroline 被引量:5
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作者 李秀梅 王庆伟 刘博 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第11期1646-1649,共4页
A new metal-organic complex Zn2(cbba)4(phen)2 (Hcbba = 2-(4'chlorine-ben- zoyl)benzoic acid, phen = 1,10-phenanthroline) 1 has been hydrothermally synthesized and structurally characterized by elemental analy... A new metal-organic complex Zn2(cbba)4(phen)2 (Hcbba = 2-(4'chlorine-ben- zoyl)benzoic acid, phen = 1,10-phenanthroline) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, fluorescence spectrum and single-crystal X-ray diffraction. The compound crystallizes in orthorhombic, space group Pbcn with a = 12.0821(II), b = 18.3140(17), c = 30.961(3) A, V= 6850.7(11) A^3, C80H48C14N4O12Zn2, Mr= 1529.76, Dc = 1.483 g/cm^3,μ(MoKa) = 0.925 mm^-1, F(000) = 3120, Z = 4, the final R = 0.0559 and wR = 0.1146 for 3963 observed reflections (I〉 2σ(I)). In the crystal structure, the zinc atom is five-coordinated with three carboxylate oxygen atoms from three different cbba ligands and two nitrogen atoms from the phen ligand, showing a distorted square-pyramidal geometry. Furthermore, it exhibits a 3D supramolecular network through π-π interactions and shows yellow photoluminescent property at room temperature. 展开更多
关键词 hydrothermal synthesis crystal structure zinc(II) complex
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Colorimetric recognition of melamine in milk using novel pincer zinc complex stabilized gold nanoparticles 被引量:1
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作者 Xiaoling Bao Jianhong Liu +4 位作者 Qingshu Zheng Lixin Duan Yuzhu Zhang Junlong Qian Tao Tu 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第10期3023-3026,共4页
A convenient colorimetric approach for visual detection of melamine in raw milk was realized by using gold nanoparticles(AuNPs)stabilized by an unsymmetrical terpyridyl zinc complex with a thymine fragment at one term... A convenient colorimetric approach for visual detection of melamine in raw milk was realized by using gold nanoparticles(AuNPs)stabilized by an unsymmetrical terpyridyl zinc complex with a thymine fragment at one terminal and a quaternary ammonium salt at the other.Even without pre-addition of melamine or relative additives,obvious color change from red to blue was observed by naked eye in the presence of trace amount of melamine,which was attributed to the alternation of aggregation state of AuNPs caused by the selective binding between the thymine fragment and melamine via triple hydrogenbonding interactions.Remarkably,the detection limit for melamine was as low as 2.4 ppb,providing a highly sensitive and efficient approach for the visual detection of melamine. 展开更多
关键词 Colorimetric recognition Gold nanoparticles Hydrogen-bonding interactions Pincer zinc complex MELAMINE
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Design and Self-assembly of a Novel Tetranuclear Zinc(Ⅱ) Complex via Reaction of 1,3-Thiazolidine-2-thione(tzdtH) with Zn(NO_ 3)_ 2 被引量:1
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作者 WEI Xian-yin HUANG Ru-dan +3 位作者 YU Li-qiong ZHU Qin-lei ZHANG Zhong-qiang LIU Li-ping 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2006年第5期665-668,共4页
The self-assembly of clusters in inorganic systems is an interesting subject. The self-assembly of big molecules has been well established in biological systems. In addition, the coordination chemistry of metal-sulfur... The self-assembly of clusters in inorganic systems is an interesting subject. The self-assembly of big molecules has been well established in biological systems. In addition, the coordination chemistry of metal-sulfur-nitrogen cluster complexes has been a very active and attracting field for many years as a result of the novelty and versatility of the crystal structures and reactivities of such clusters, as well as their potential applications as the models for the active sites in non-heme proteins. At the same time, there is currently considerable interest in the formation of metal complexes with heterocyclic ligands because of the diverse characteristics of ligands and their consequential wide range of applications. 展开更多
关键词 Self assembly Tetranuclear cluster zinc complex Crystal structure
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Synthesis and Crystal Structure of a Tetranuclear Carboxylate-bridged Lanthanum(III)-Zinc(II) Complex [La_2Zn_2(m-CNC_6H_4COO)_(10)(Py)_2(C_2H_5OH)_2] 被引量:1
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作者 郑发鲲 郭国聪 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2001年第5期391-395,共5页
The title complex was prepared from self-assembly reaction of La(NO3)3(6H2O, Zn(NO3)2(6H2O, m-cyanobenzoic acid (m-CNC6H4COOH) and pyridine (Py) in refluxing ethanol and its structure was determined by single-... The title complex was prepared from self-assembly reaction of La(NO3)3(6H2O, Zn(NO3)2(6H2O, m-cyanobenzoic acid (m-CNC6H4COOH) and pyridine (Py) in refluxing ethanol and its structure was determined by single-crystal X-ray diffraction. Crystallographic data: C94H62N12La2O22Zn2, Mr = 2120.12, triclinic space group P, a = 13.2219(5), b = 13.2713(5), c = 14.1987(6) ?, (???69.156(1), ( = 84.034(1), ( = 89.400(1) (, V = 2314.9(2) ?3, Z = 1, Dc = 1.521 g/cm3, F(000) = 1060, ( (MoK() = 14.94 cm-1, the final R = 0.043 and wR = 0.117 for 6381 unique reflections with I > 2((I). Crystal structure determination shows that the neighboring lanthanum(III) and zinc(II) ions are bridged by three bidentate m-cyanobenzonate ligands in the syn-syn fashion to form a pair of dinuclear [LaZn(m-CNC6H4COO)3(Py)(C2H5OH)] subunits, being linked together by two bidentate and two tridentate m-cyanobenzonate groups in the syn-syn and syn-anti modes, respectively, to construct a tetranuclear La-Zn complex [La2Zn2(m-CNC6H4COO)10(Py)2(C2H5OH)2]. 展开更多
关键词 synthesis crystal structure lanthanum complex zinc complex carboxylate complex
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Conformation Diversity of Complexes Constructed by N-(2-Pyridylmethyl)-phenylalanine and Zn(Ⅱ) 被引量:1
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作者 李新发 刘庆燕 +3 位作者 谢在来 李涛海 李亚峰 曹荣 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第1期53-60,共8页
Four configurationally and conformationally related Zn(II) complexes with a tridentate ligand namely, N-(2-pyridylmethyl)-phenylalanine (Hpmpa), have been synthesized by hydrothermal reactions. [Zn(L-α-pmpa)2... Four configurationally and conformationally related Zn(II) complexes with a tridentate ligand namely, N-(2-pyridylmethyl)-phenylalanine (Hpmpa), have been synthesized by hydrothermal reactions. [Zn(L-α-pmpa)2·HaO] 1: orthorhombic, space group P21212 with a = 15.1091(7), b = 16.2417(8), c = 5.9972(3) A, V= 1471.70(12)A^3, Z = 2, Mr = 593.97, Dc = 1.340 g/cm^3,μ = 0.879 mm^-1, F(000) = 620, Rint= 0.0205, R = 0.0450 and wR = 0.1578 for 3102 observed reflections with I 〉 2σ(I); [Zn(D-α-pmpa)2·2H2O] 2: orthorhombic, space group P21212 with a = 15.1023(6), b = 16.2516(7), c = 6.0024(2)A, V= 1473.21(10)A^3, Z = 2, Mr = 611.98, Dc = 1.380 g/cm^3,μ = 0.882 mm^-1, F(000) = 640, Rint= 0.0337, R = 0.0484 and wR = 0.1435 for 2408 observed reflections with I 〉 2σ(I); [Zn(L-β-pmpa)2] 3: monoclinic, space group C2/c with a = 27.8667(5), b = 5.60350(10), c = 19.9636(2)A β = 120:2210(10)°, V = 2693.66(7)A^3, Z = 4, Mr = 575.95, De= 1.420 g/cm^3,μ = 0.955 mm^-1, F(000) = 1200, Rint= 0.0345, R = 0.0358 and wR = 0.1135 for 2251 observed reflections with I 〉 2σ(I); and [Zn(D-β-pmpa)2] 4. They are all mononuclear discrete structures. The influence of temperature and pH on the conformation of structures has been investigated. Moreover, the photoluminescent properties of compounds 1 and 3 are also reported. 展开更多
关键词 zinc Complex amino acid CONFORMATION configuration ISOMERISM
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Synthesis and Crystal Structure of a Zinc(II) Complex Salt with the Schiff Base of Picolinaldehyde N-oxide and Semicarbazone 被引量:5
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作者 YU Qing ZHU Li-Gang BIAN He-Dong DENG Ji-Hua YANG Xiao-E GUO Gui-Quan LIANG Hong 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2005年第11期1271-1275,共5页
The title zinc(Ⅱ) complex salt [Zn(H2O)6](ClO4)2-(PNOS)4, where PNOS is derived from picolinaldehyde N-oxide with semicarbazone, has been prepared and structurally characterized by X-ray single-crystal analys... The title zinc(Ⅱ) complex salt [Zn(H2O)6](ClO4)2-(PNOS)4, where PNOS is derived from picolinaldehyde N-oxide with semicarbazone, has been prepared and structurally characterized by X-ray single-crystal analysis. It crystallizes in triclinic, space group PI with a = 7.529(3), b = 10.206(4), c = 14.678(6)A, a = 86.293(6), β= 87.686(7), γ= 81.382(6)°, C28H44Cl2N16O22Zn, Mr = 1093.06, V = 1112.3(8) ,A^3 Z = 1, Dc = 1.632 g/cm^3, S = 1.089, μ(MoKa) = 0.773 mm^-1, F(000) = 564, the final R = 0.0438 and wR = 0.1076 for 3888 independent reflections with Rint = 0.0224. The crystal structure possesses a [Zn(H2O)6]^2+ cation, two ClO4^- anions and four PNOSs. In the crystal structure, Zn^2+ cation is located at the symcenter and coordinated by six water molecules. In [Zn(H2O)6]^2+, an elongate octahedral complex cation, the average Zn-O bond length is 2.087(2) A. There exist a lot of H bonds in the structure, linking the cation [Zn(H2O)6]^2+, anion ClO4^- and PNOS to form a 3D network. 展开更多
关键词 zinc(Ⅱ) complex salt picolinaldehyde N-oxide SEMICARBAZONE crystal structure Schiff base
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Synthesis,Structure,and Luminescent Property of a 3-D Zinc Complex {[Zn_8^(II)(4-APha)_8(CH_3COO)_8](CH_3CH_2OH)_2}_n 被引量:1
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作者 杨华 胡道道 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2014年第7期1019-1024,共6页
The title complex [ZN8II(4-APha)8(CH3COO)8(CH3CH2OH)2]n (1, 4-APha = 4-ami- nophenylhydroxamic acid) has been prepared under solvothermal conditions. It has been characterized by X-ray single-crystal diffracti... The title complex [ZN8II(4-APha)8(CH3COO)8(CH3CH2OH)2]n (1, 4-APha = 4-ami- nophenylhydroxamic acid) has been prepared under solvothermal conditions. It has been characterized by X-ray single-crystal diffraction, IR and elemental analysis. The crystal belongs to the monoclinic system, space group C2/c with a = 39.074(4), b = 9.9645(8), c=38.846(3) A, β = 136.438°, V= 10423.1(14) A3, C84H118N16O39Zn8, Mr = 2498.90, Z = 4, Dc = 1.592 g/cm3,μ= 1.900 mm-1, F(000) = 5144, the final R = 0.1036 and wR = 0.2953. This complex possesses a 3-D structure which is constructed from 1-D chain motifs linked by the 4-APha" ligands. The luminescent property of the title complex has been investigated. 展开更多
关键词 zinc complex hydroxamic acftls 3-D framework luminescent property
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