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Syntheses,Crystal Structures and Fluorescence Properties of Two Mononuclear Copper(Ⅱ) Compounds 被引量:1
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作者 陈彦国 王启英 +2 位作者 唐强 洪鹏 胡传群 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第12期1885-1893,共9页
Two new compounds,1([Cu(IDB_)2]Cl_2·2CH_3CH_2OH·2H_2O(IDB = N,N-di(2-benzimidazolylmethyl)imine]) and 2([Cu(EDTB)]·2[C_6H_4(OH)COO]·6H_2O(EDTB = N,N,N',N'-tetrakis-[(2-benzimidazoly... Two new compounds,1([Cu(IDB_)2]Cl_2·2CH_3CH_2OH·2H_2O(IDB = N,N-di(2-benzimidazolylmethyl)imine]) and 2([Cu(EDTB)]·2[C_6H_4(OH)COO]·6H_2O(EDTB = N,N,N',N'-tetrakis-[(2-benzimidazolyl)methyl]-1,2-ethanediamine]),have been synthesized and their crystal structures were determined by single-crystal X-ray diffraction. Crystal 1 belongs to the triclinic system,space group P1 with a = 9.565(2),b = 9.863(2),c = 10.252(3) ?,α = 81.915,β = 88.330,γ = 87.347°,V = 956.28(40) ?3,Z = 1,F(000) = 427,D_c = 1.419 g/cm3,Mr = 817.27 and μ(MoKα) = 0.764 mm^(-1). The final R indices(I 〉 2σ(I)): R = 0.0505,wR = 0.1417; R indices(all data): R = 0.0591,wR = 0.1525. Crystal 2 is of triclinic system,space group P1 with a = 11.487(3),b = 13.396(4),c = 17.977(5) ?,α = 73.899(5),β = 86.629(5),γ = 65.018(4)°,V = 2403.8(12) ?3,Z = 2,F(000) = 1072,D3c = 1.417 g/cm,Mr = 1025.54,μ(MoKα) = 0.528 mm^(-1). The final R indices(I 〉 2σ(I)): R = 0.0769,w R = 0.163 2; R indices(all data): R = 0.0769,wR = 0.1632. The two compounds exhibit mononuclear structures. The copper(Ⅱ) atom of crystal 1 is six-coordinated by four nitrogen atoms of benzimidazole groups and two amine nitrogen atoms from the ligand IDB to adopt a distorted octahedral coordination geometry. The copper(Ⅱ) atom of crystal 2 is six-coordinated by four nitrogen atoms of benzimidazole groups and two amine nitrogen atoms from the ligand EDTB to show a distorted octahedral coordination geometry. Particularly,the two compounds exhibit fluorescent properties at room temperature in ethanol. 展开更多
关键词 mononuclear copper(Ⅱ) compound synthesis crystal structure fluorescence
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Hydrothermal Synthesis,Crystal Structure and Fluorescence Spectrum Studies of a Supramolecular Compound {[2-(2-Pyridyl)benzimidazoleH_2]^(2+)·[SbCl_5]^(2-)}_2 被引量:5
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作者 郭应臣 卓立宏 +2 位作者 赵一阳 姚兴芝 黄群增 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第11期1333-1338,共6页
A new supramolecular compound, { [2-(2-pyridyl)benzimidazoleH2]2+.[SBC15]2-}2, was synthesized by the hydrothermal reaction of o-diaminobenzene, 2-pyridinecarboxylie acid and SbCl3 in 1:1 HC1 solution, and charact... A new supramolecular compound, { [2-(2-pyridyl)benzimidazoleH2]2+.[SBC15]2-}2, was synthesized by the hydrothermal reaction of o-diaminobenzene, 2-pyridinecarboxylie acid and SbCl3 in 1:1 HC1 solution, and characterized by chemical analysis, elemental analysis, IR spectra, thermogravimetfic analysis and fluorescence spectra. The crystal structure was deter- mined by X-ray single-crystal diffraction. The crystal belongs to the monoclinic system, space group P211c, with a = 16.0397(13), b = 14.3189(12), c = 15.6370(13) A, β = 105.8980(10)°, V = 3454.0(5) A3, Z = 4, C24H22Cl10N6Sb2, Mr = 992.48, Dc = 1.909 g/cm3,/z = 2.366 mm-1, S = 1.010, F(000) = 1920, R = 0.0254 and wR = 0.0555. The coordination anion, [SbCl5]2- which is a distorted tetragonal pyramid, is composed by coordinating action with Sb3+ ion and five adjacent chloride ions. Every four coordination anions of [SbCl5]2- form a biquaternion ring structure through the secondary bonding of Sb...Cl. Moreover, the compound adopts a three-dimensional network supramolecular structure because of the hydrogen bonds and π-π stacking between the rings and the 2-(2-pyridyl)benzimidazole divalent cations. The title compound also shows good fluorescent behaviors. 展开更多
关键词 2.(2-pyridyl)benzimidazole supramolecular compound hydrothermal synthesis crystal structure fluorescence spectrum
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Hydrothermal Synthesis and Crystal Structure of a Cadmium(Ⅱ) Polymer with One-dimensional Chain Structure:[Cd(MDPPz)(BDC)(H_2O)]_n 被引量:1
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作者 李传碧 周实 +1 位作者 李秀梅 刘博 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第11期1349-1352,共4页
A metal-organic coordination compound formulated as [Cd(MDPPz)(BDC)(H2O)], 1 (MDPPz = 11-methyldipyrido[3,2-a:2′,3′-c]phenazine, BDC = 1,4-benzenedicarboxylate)has been hydrothermally synthesized and struct... A metal-organic coordination compound formulated as [Cd(MDPPz)(BDC)(H2O)], 1 (MDPPz = 11-methyldipyrido[3,2-a:2′,3′-c]phenazine, BDC = 1,4-benzenedicarboxylate)has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, fluorescence spectrum and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group C2/c, with a = 30.673(8), b = 9.623(3), c = 20.784(6) A, β = 98.646(3)°, V = 6065(3) A3, C27H17CdN4O5, Mr= 589.85, Dc = 1.292 g/cm^3, μ(MoKα) = 0.757 mm-1, F(000) = 2360, Z = 8, the fmal R = 0.0381 and wR = 0.0855 for 4191 observed reflections (I〉 2σ(Ⅰ)). 1 exhibits blue fluorescence property at room temperature. 展开更多
关键词 cadmium compound crystal structure fluorescence
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Synthesis, Crystal Structure and Fluorescent Property of a New One-dimensional Cadmium(Ⅱ) Coordination Polymer Based on 3,4-Thiophenedicarboxylic Acid and 1,10-Phenanthroline 被引量:10
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作者 薛丽平 李召好 +1 位作者 李仕辉 王建革 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第5期704-708,共5页
A new cadmium(Ⅱ) polymer [Cd(tdc)(Phen)]n 1 (H2tdc = thiophene-3,4-dicar-boxylic acid, Phen = 1,10-phenanthroline) was synthesized under hydrothermal conditions. The compound crystallizes in the triclinic sys... A new cadmium(Ⅱ) polymer [Cd(tdc)(Phen)]n 1 (H2tdc = thiophene-3,4-dicar-boxylic acid, Phen = 1,10-phenanthroline) was synthesized under hydrothermal conditions. The compound crystallizes in the triclinic system, space group P , with a = 7.3150(10), b = 10.3598(14), c = 10.8784(15) , α = 82.2740(10), β = 72.9730(10), γ = 80.236(2)°, V = 773.68(18) 3, Z = 2, Mr = 462.74, Dc = 1.986 Mg/m3, μ = 1.58 mm-1, F(000) = 456, the final R = 0.0218 and wR = 0.0465 for 3361 observed reflections with Ⅰ 〉 2σ(Ⅰ). The compound presents a one-dimensional (1-D) double-stranded structure and exhibits fluorescent emission at room temperature. Furthermore, infrared spectroscopy, elemental analyses, thermogravimetric analysis and powder X-ray diffraction properties of the compound are also investigated. 展开更多
关键词 thiophene-3 4-dicarboxyfic acid cadmium(Ⅱ) crystal structure fluorescent property
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Synthesis, Crystal Structure and Fluorescene of a One-dimensional Compound {CdI_2(2,2′-bipy)}_n
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作者 GUO Hong-Xu DU Zi-Xian +1 位作者 YOU Xiu-Li WANG Qing-Hua 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第2期211-213,共3页
The title compound, {CdI2(2,2'-bipy)}n, was prepared by the hydrothermal reaction of CdI2 and 2,2'-bipy in an aqueous solution, and its crystal structure was determined by X-ray single-crystal analysis. Crystallog... The title compound, {CdI2(2,2'-bipy)}n, was prepared by the hydrothermal reaction of CdI2 and 2,2'-bipy in an aqueous solution, and its crystal structure was determined by X-ray single-crystal analysis. Crystallographic data for 1: C10H8N2CdI2, monoclinic system, space group C2/c, a = 16.927(1), b = 10.0925(7), c = 7.7422(3) A, β = 106.0629(4)°, V = 1271.00(14) A^3, Z = 4, F(000) = 944,/a = 6.546 mm^-1, Dc= 2.730 g/cm^3, Mr = 522.38, the final R = 0.0309 and wR = 0.0805 for 1310 observed reflections (I 〉 20(I)). X-ray crystal structure analysis shows that the Cd atom is coordinated by four iodines and two N atoms from one 2,2'-bipy to form an 1-D chain-like structure through bridging iodines. The fluorescene of the title compound was also discussed. 展开更多
关键词 cadmium iodide 2 2'-bipyridine one-dimensionalchain-like crystal structure fluorescence
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Synthesis,Crystal Structure and Fluorescence of a Three-dimensional Cd(II) Coordination Polymer [Cd(μ_(1,3)- SCN^-)_2(μ-dmpo)]_n (dmpo = 3,5-Dimethylpyridine N-Oxide)
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作者 SHI Jing-Min ZHANG Feng-Xia +1 位作者 HUANG Jie LIU Lian-Dong 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第7期779-782,共4页
A three-dimensional complex [Cd(μ1,3-SCN)2(dmpo)]n has been synthesized with μ1,3-SCN^- and dmpo as mixed bridge ligands. The crystal belongs to monoclinic, space group C2/c with a = 15.648(2), b = 15.126(2)... A three-dimensional complex [Cd(μ1,3-SCN)2(dmpo)]n has been synthesized with μ1,3-SCN^- and dmpo as mixed bridge ligands. The crystal belongs to monoclinic, space group C2/c with a = 15.648(2), b = 15.126(2), c = 11.9773(15) A, β= 112.416(2)°, V= 2620.7(6) ,A, Z= 8, C9H9CdN3OS2, Mr = 351.71, Dc = 1.783 g/cm^3, F(000) = 1376 and μ = 1.967 mm^-1. The structure was refined to R = 0.0260 and wR = 0.0647 for 2186 observed reflections (I 〉 2σ(I)). In the crystal the Cd(Ⅱ) ions are coordinated by ,μ1,3-SCN^- bridge ligands to form the crossing chains on the adjacent planes, and these chains are further joined by μ-dmpo mono-dentate bridge ligands leading to a three-dimensional structure. The complex exhibits strong fluorescent emission property. 展开更多
关键词 crystal structure cadmium(Ⅱ) complex fluorescence aromatic N-oxide ligand thiocyanate ligand
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Synthesis, Crystal Structure and Luminescent Property of a Novel 1-D Cadmium(II) Complex: [Cd_2(C_8H_3NO_6)_2(H_2O)_4]_n·2nH_2O
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作者 郭鸿旭 黄春华 +1 位作者 林思 刘佳铭 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第12期1445-1448,共4页
A novel one-dimensional chain-like coordination polymer constructed from 3-nitrobenzene- 1,2-dicarboxylic acid, [Cd2(C8H3NO6)2(H2O)4]n·2nH2O, has been synthesized and its structure was determined by X-ray cry... A novel one-dimensional chain-like coordination polymer constructed from 3-nitrobenzene- 1,2-dicarboxylic acid, [Cd2(C8H3NO6)2(H2O)4]n·2nH2O, has been synthesized and its structure was determined by X-ray crystallography method. The crystal belongs to monoclinic, space group P21/c with a = 6.1252(8), b = 20.706(3), c = 8.8067(11)A, β = 95.608(2)^o, V = 1111.6(2)A^3, Mr = 751.12, De= 2.244 g/cm^3, F(000) = 736,μ = 2.011 mm^-1, Z= 2, the final R = 0.0262 and wR = 0.0692 for 2338 observed reflections with I 〉 2a(I). The structure of the title compound presents a 1-D chain-like structure constructed by dimer units, [Cd2(C8H3NO6)2(H2O)4]n, through two carboxylate oxygen atoms. The fluorescence of the title compound has been also discussed in this paper. 展开更多
关键词 cadmium(Ⅱ) complex one-dimensional chain-like crystal structure fluorescence
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A Cadmium(II) Coordination Polymer: Crystal Structure and Fluorescent Property of [CdCl_2(4,4'-bipyridine)]_ ∞
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作者 LOUBen-Yong WANGRui-Hu XUYing YUANDa-Qiang ZHOUYou-Fu HONGMao-Chun 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2004年第7期747-750,共4页
The reaction of L-histidine, CdCl22.5H2O and 4,4-bipyridine in methane/water gave rise to a two-dimensional coordination polymer [CdCl2(4,4-bipyridine)] which has been characterized by single-crystal X-ray diffraction... The reaction of L-histidine, CdCl22.5H2O and 4,4-bipyridine in methane/water gave rise to a two-dimensional coordination polymer [CdCl2(4,4-bipyridine)] which has been characterized by single-crystal X-ray diffraction. The polymer crystallizes in the orthorhombic sys- tem, space group Cmmm with a = 12.083(7), b = 11.771(7), c = 3.781(2) ? V = 537.8(6) ?, Z = 2, C10H8N2CdCl2, Mr = 339.48, Dc = 2.097 g/cm3, F(000) = 328 and (MoK? = 2.490 mm-1. The final R = 0.0658 and wR = 0.1398 for 257 observed reflections with I≥2(I). 展开更多
关键词 合成 晶体结构 镉配合物 荧光性质 4 4′-二嘧啶
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Hydrothermal Synthesis, Crystal Structure and Fluorescent Property of a Cd(Ⅱ) Complex Based on Biimidazole and Isonicotinate-N-oxide 被引量:4
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作者 毛稳玲 胡宗球 丁瑜 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2010年第4期587-591,共5页
A new complex [Cd(H2biim)2(H2O)2]·(ino)2·4H2O (H2biim = 2,2'-biimidazole, ino = isonicotinate-N-oxide) has been prepared and characterized by single-crystal X-ray diffraction analysis, IR and fluore... A new complex [Cd(H2biim)2(H2O)2]·(ino)2·4H2O (H2biim = 2,2'-biimidazole, ino = isonicotinate-N-oxide) has been prepared and characterized by single-crystal X-ray diffraction analysis, IR and fluorescence spectra analysis. The crystal is of triclinic system, space group P1 with a = 7.5380(6), b = 8.0402(7), c = 13.5094(11) , α = 104.269(1), β = 93.604(1), γ = 98.349(1)°, V = 780.93(11) 3, Mr = 765.00, Dc = 1.627 g/cm3, F(000) = 390, μ = 0.776 mm-1 and Z = 1. The final R = 0.0322 and wR = 0.0825 for 7038 observed reflections with I 2σ(I) and R = 0.0341 and wR = 0.0832 for all data. The title complex exhibits an infinite chain-like structure through bridging isonicotinate-N-oxide. Strong interchain hydrogen bonds between isonicotinate-N-oxide and H2biim result in the robust 3-D supramolecular architecture. Moreover, the complex shows strong photoluminescence with emission maximum at λ = 401 nm upon λex = 330 nm. 展开更多
关键词 cadmium(Ⅱ) complex crystal structure 2 2-biimidazole isonicotinc acid N-oxide hydrothermal synthesis fluorescent property
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Synthesis,Structure,Electrochemistry and Fluorescence Properties of a One-dimensional Coordination Polymer {[Cd[μ-(4,4′-dps)]_2(H_2O)_2]·(4-abs)_2(H_2O)_2}_n 被引量:1
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作者 杜仲祥 李俊霞 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第7期847-852,共6页
A new cadmium(N) compound, {[ CdLu-(4,4'-dps) ]2(H2O)2]'(4'abs )2(H2O)2n 1 (4,4'-dps = 4,4'-dipyridylsulfide, 4-abs = deprotonated 4-amino benzenesulfonic acid), has been synthesized and structurally ... A new cadmium(N) compound, {[ CdLu-(4,4'-dps) ]2(H2O)2]'(4'abs )2(H2O)2n 1 (4,4'-dps = 4,4'-dipyridylsulfide, 4-abs = deprotonated 4-amino benzenesulfonic acid), has been synthesized and structurally characterized. It belongs to the orthorhombic system, space group Pbcn with a = 19.950(3), b = 10.6381(13), c = 18.055(2)A, V= 3831.8(8) A3, Z = 4, C32H36CdN6010S4, Mr = 905.31, F(000) = 1848, μ= 0.850 mm^-1, Dc = 1.569 Mg/m^3, the final R = 0.0238 and wR = 0.0589 for 3080 observed reflections with I 〉 2σ(I). Complex I is a one-dimensional linear chain coordination polymer and the repeat unit is comprised of doubly charged cadmium complex cation, uncoordinated 4-aminobenzene sulfonate anions and water molecules. The cadmium(H) ion adopts a six-coordinate distorted octahedral geometry. Complex 1 is stabilized and linked into a three-dimensional layered structure through intermolecular O-H…O and N-H…O hydrogen bonds together with electrostatic force. The cyclic voltammograms and fluorescence spectrum of 1 were also measured. It shows one irreversible redox process and emits a very strong and sharp fluorescent band at about 341 nm. 展开更多
关键词 cadmium(II) complex 4 4'-dipyridyl sulfide crystal structure cyclic voltammograms fluorescence
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Synthesis, Fluorescence and Dielectric Properties of Two Novel Compounds Based on Triethylenediamine Derivatives
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作者 邓思雨 钱秀 +1 位作者 李木 陈立庄 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2019年第4期605-612,共8页
Two compounds C_8H_(18)N_2Br_3Mn_(0.5)(1) and C_(12)H_(26)N_2Cl_4Mn(2) based on triethylenediamine derivatives were synthesized by solution method and were characterized by elemental analysis, infrared spectroscopy, s... Two compounds C_8H_(18)N_2Br_3Mn_(0.5)(1) and C_(12)H_(26)N_2Cl_4Mn(2) based on triethylenediamine derivatives were synthesized by solution method and were characterized by elemental analysis, infrared spectroscopy, single-crystal X-ray structure analysis, fluorescence test, circular dichroism(CD) analysis and dielectric measurement, respectively. According to single-crystal X-ray determination, compound 1 crystallizes in the cubic system, space group Pa3 with a = b = c = 13.7246(5) ?, Z = 24, V = 2585.2(3) ?~3; and compound 2 crystallizes in the orthorhombic system, space group P212121 with a = 7.9716(13), b = 15.309(3), c = 15.804(3) ?, Z = 4 and V = 1928.7(6) ?3. Fluorescent analysis of compound 1 showed an intense emission band at 670 nm when the exciting radiation was set at 378 nm and fluorescent analysis of compound 2 showed an intense emission band at 515 nm when the exciting radiation was set at 363 nm. Dielectric constants of compounds 1 and 2 were measured at different frequencies with temperature variation. 展开更多
关键词 triethylenediamine DERIVATIVES FLUORESCENT compoundS crystal structure PERMITTIVITY properties
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Hydrothermal Syntheses and Crystal Structures of Two Complexes with 3,5-Dinitrosalicylate and 2,2′-Bipyridine Ligands
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作者 温德才 刘世雄 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第11期1362-1368,共7页
The two title complexes, [Cd{3,5-(NO2)2sal}(2,2′-bipy)]n 1 and [Mn{3,5- (NO2)2sal}(2,2′-bipy)]n 2 (3,5-(NO2)2sal = 3,5-dinitrosalicylate, 2,2'-bipy = 2,2′-bipyridine), were synthesized by the hydrother... The two title complexes, [Cd{3,5-(NO2)2sal}(2,2′-bipy)]n 1 and [Mn{3,5- (NO2)2sal}(2,2′-bipy)]n 2 (3,5-(NO2)2sal = 3,5-dinitrosalicylate, 2,2'-bipy = 2,2′-bipyridine), were synthesized by the hydrothermal reaction and structurally characterized. Complex 1 crystallizes in triclinic, space group P1, a = 5.581(4), b = 12.071(8), c = 12.88(1)A, α= 92.10(3),β= 96.73(3), γ = 102.02(2)°, C17H10N407Cd, Mr = 494.69, V= 841(1)A3, Z = 2, Dc = 1.954 g/cm3, F(000) = 488, μ= 1.353 mm^-1, R = 0.0248 and wR = 0.0761. Complex 2 crystallizes in monoclinic with space group P21/c, a = 8.604(3), b = 23.88(1), c = 8.894(3) A, β = 102.45(1)°, C17H10N407Mn, Mr = 437.23, V= 1785(1) A3, Z=.4, Dc = 1.627 g/cm3, F(000) = 884, μ = 0.791 mm^-1, R = 0.0471 and wR = 0.1250. Complex 1 possesses an infinite 1D polymeric chain structure consisting of the repeated basic four-membered ring units (Cd2O2) and eight-membered ring units (CdOCO)2. Compound 2displays a linear 1D chain through Mn(Ⅱ) atoms and bridging carboxylate groups of 3,5-dinitrosalicylic acid ligands with the Mn…Mn separation of 4.472(2)A. The fluorescence properties and cyclic voltammetric behaviors of the complexes are also reported. 展开更多
关键词 cadmium(Ⅱ) complex manganese(Ⅱ) complex crystal structure hydrogen bond fluorescence property electrochemical property
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Crystal Structure,Electrochemical and Fluorescent Properties of a New Cadmium(II) Complex[Cd(C_(12)H_6O_4N_2)(Phen)_2(H_2O)]·3H_2O 被引量:4
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作者 杨颖群 张少华 李薇 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2013年第11期1663-1666,共4页
A new Cd(II) complex [Cd(C12H6OaN2)(Phen)ffH2O)]'3H2O with 2,2"-bipyridine- 3,3"-dicarboxylic acid as a ligand has been synthesized. Crystal data for the title complex are as follows: monoclinic, space grou... A new Cd(II) complex [Cd(C12H6OaN2)(Phen)ffH2O)]'3H2O with 2,2"-bipyridine- 3,3"-dicarboxylic acid as a ligand has been synthesized. Crystal data for the title complex are as follows: monoclinic, space group P2dn, a = 12.8458(5), b = 17.9131(7), c = 15.2960(6) A, β = 111.7430(10)°, V = 3269.3(2) A3, Dc = 1.581 g/cm3, Z = 4,/a(MoKa) = 0.731 mm-1, F(000) = 1580, the R = 0.0244 and wR = 0.0605. In the title complex, the central Cd(ll) ion is located in a distorted octahedral coordination environment. The electrochemical and fluorescent properties of the title complex were studied. The results show that the electron transfer of the title complex is irreversible in the electrode reaction and it has a broad emission peak in the range of 470-508 nm with the excitation wavelength of 488 nm. 展开更多
关键词 cadmium(ll) complex crystal structure electrochemical and fluorescent properties
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Synthesis,Crystal Structure and Physical Properties of a Novel Cadmium(Ⅱ) Supramolecular 3D Framework
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作者 ZHAO Wei-Xing WEN Pu-Hong +3 位作者 WANG Yan JIANG Luan FENG Guo-Dong LI Zong-Xiao 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2015年第5期786-793,共8页
A new inorganic-organic hybrid cadmium(Ⅱ) complex [Cd2(H1/2C4BIm)2(CH3COO)]nhas been prepared by a hydrothermal reaction,and characterized by fluorescence,IR,TGA,and single-crystal X-ray diffraction analysis.In... A new inorganic-organic hybrid cadmium(Ⅱ) complex [Cd2(H1/2C4BIm)2(CH3COO)]nhas been prepared by a hydrothermal reaction,and characterized by fluorescence,IR,TGA,and single-crystal X-ray diffraction analysis.In its crystal structure,there are two kinds of coordinating forms for those Cd(Ⅱ) ions.One is that the Cd(Ⅱ) ion is coordinated by one carboxylate oxygen atom from one acetate oxygen ligand and three benzimidazole nitrogen atoms from three 2,2’-(1,4-butanediyl)bis(1H-benzimidazole)(H2C4BIm) ligands,and the other is that the Cd(Ⅱ) ion is coordinated by four benzimidazole nitrogen atoms from four H2C4 BIm ligands to furnish two distorted tetrahedral coordination geometries.It exhibits a beautiful structure for a 2D layer and a 3D network,with its four-connecting nodes provided by the H2C4 BIm ligands.Furthermore,this complex shows intense luminescent property at room temperature.In [Cd2(H2C2BIm)2(C9H6O4)2]n,the H2C2 BIm ligand lost the role as a bridging ligand because of the shorter alkyl chain compared with that of H2C4 BIm ligand. 展开更多
关键词 cadmium hydrothermal synthesis crystal structure fluorescence
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Syntheses, Crystal Structures, Thermal and Fluorescent Properties of Two New Bearing Bi(Ⅲ) Supramolecular Compounds
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作者 卢伟红 许婷 +3 位作者 阳帆 孙俊彬 陈满生 颜群轩 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2021年第5期603-609,529,共8页
Two new bearing Bi(Ⅲ) supramolecular compounds [Bi(pydcH)_(3)(Bi(pydcH)(pydcH_(2))(pydc)(Bi(pydcH)(pydcH_(2))(pydc)](1) and {[Bi(pydcH)_(3)]·(H_(2)O)_(5)(Dmap)}_(2)(2) have been successfully synthesized via hydr... Two new bearing Bi(Ⅲ) supramolecular compounds [Bi(pydcH)_(3)(Bi(pydcH)(pydcH_(2))(pydc)(Bi(pydcH)(pydcH_(2))(pydc)](1) and {[Bi(pydcH)_(3)]·(H_(2)O)_(5)(Dmap)}_(2)(2) have been successfully synthesized via hydrothermal reaction(pydcH_(2) = 2,6-pyridine dicarboxylate, Dmap = 4-dimethylamiopyridine). They have been structurally determined by single-crystal X-ray analysis, and characterized by fluorescence analysis and thermogravimetric analysis(TG). Both compounds 1 and 2 are of the same triclinic system with different structures. The decomposition mechanisms of compounds 1 and 2 are discussed. Compared to 1, lots of small molecules were possibly removed from compound 2 below 250 ℃. In addition, the photoluminescence properties were also investigated. 展开更多
关键词 Bi(Ⅲ)supramolecular compounds crystal structure fluorescence thermal stability
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Synthesis,Crystal Structure and Luminescence Study of a New Two-dimensional Mn(Ⅱ)Coordination Polymer 被引量:3
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作者 闫丽 刘伟 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2016年第11期1770-1776,共7页
The coordination polymer [Mn2(cipt)2(aic)2]n (cipt = 2-(3-chlorophenyl)-1H- imidazo[4,5-f][1,10]phenanthroline, aic = 5-amino-isophthalic acid) has been obtained from hydrothermal reaction and characterized by... The coordination polymer [Mn2(cipt)2(aic)2]n (cipt = 2-(3-chlorophenyl)-1H- imidazo[4,5-f][1,10]phenanthroline, aic = 5-amino-isophthalic acid) has been obtained from hydrothermal reaction and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. The title compound crystallizes in the triclinic system, space group P , with a = 11.523(3), b = 12.162(3), c = 18.706(5) A^°, β = 81.789(5)°, V = 2455.2(1) A^°3, C54H32Cl2Mn2N10O8, Mr = 1129.68, Z = 2, Dc = 1.528 g/cm3, μ = 0.692 mm^-1, F(000) = 1148, R = 0.064 and wR = 0.145 for 9571 observed reflections (I 〉 2σ(I)). In this polymer, the Mn(II) atoms adopt different coordination modes. The Mn(1) atom is five-coordinated, forming a distorted tetragonal pyramidal geometry. Mn(2) atom is six-coordinated to get a distorted octahedral geometry, which is different from the Mn(1) atom. Each Mn(II) atom is linked by aic ligands with neighboring Mn(II) atoms, forming an infinite one-dimensional (1D) double-chain structure. The existence of N–H…O hydrogen bonding interactions leads the 1D chains to generate a 2D structure. Luminescent properties for the ligand cipt and compound 1 have also been discussed in detail. 展开更多
关键词 Mn(Ⅱ) compound crystal structure fluorescence 5-amino-isophthalic acid
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Crystal Structure of Dimeric Units Cd_2(ncpo)_2(phen)_2(H_2O)_2 Constructed by Flexible Dicarboxylic Acid with Fluorescent Emission
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作者 杨利 于伟 +3 位作者 张同来 张建国 刘振华 吴瑞风 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第4期405-408,共4页
A dimeric coordination complex Cd2(ncpo)2(phen)2(H2O)2 was constructed by a flexible dicarboxylic acid, 2-nitro-4-carboxylphenoxyacetic acid. Its crystal structure was determined by X-ray single-crystal diffract... A dimeric coordination complex Cd2(ncpo)2(phen)2(H2O)2 was constructed by a flexible dicarboxylic acid, 2-nitro-4-carboxylphenoxyacetic acid. Its crystal structure was determined by X-ray single-crystal diffraction analysis. The crystal is of monoclinic system, space group P21/n with a = 17.2616(3), b = 12.7460(2), c = 18.4041(3) A^°, β= 94.432(1)°, C42H30Cd2N6O16, Mr = 1099.52, V = 4037.09(12)A^°^3 Dc = 1.809 g/cm^3, F(000) = 2192, μ = 1.139 cm^-1 and Z = 4. The final R = 0.0218 and wR = 0.0703 for 8288 observed reflections with I 〉 2σ(I). There are two crystallographically independent but structurally very similar molecules in the unit cell of the title complex. It is noticeable that the ligand ncpo^2- displays a good flexibility, demonstrating different modes from the rigid ligands. The luminescence property has been investigated, which shows photoluminescence at 465, 490 and 574 nm upon excitation at 320 nm in the solid state at room temperature. 展开更多
关键词 cadmium complex crystal structure flexible dicarboxylic acid fluorescence
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Syntheses,Crystal Structures,and Photoluminescent Properties for One New Cd(Ⅱ) CP Based on 3,5-Bis(4'-carboxy-phenyl)-1,2,4-triazole and 1,4-Bis(imidazol-1-ylmethyl)benzene
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作者 侯向阳 王潇 +5 位作者 任宜霞 王记江 金伟 康伟伟 马鑫 韩星星 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2017年第12期2067-2072,共6页
One new coordination polymer(CP) [Cd(bct)(bib)]·2(H2O)(1), based on 3,5-bis(4'-carboxy-phenyl)-1,2,4-triazole(H2 bct) and 1,4-bis(imidazol-1-ylmethyl)benzene(bib), has been synthesized by hydro... One new coordination polymer(CP) [Cd(bct)(bib)]·2(H2O)(1), based on 3,5-bis(4'-carboxy-phenyl)-1,2,4-triazole(H2 bct) and 1,4-bis(imidazol-1-ylmethyl)benzene(bib), has been synthesized by hydrothermal method, and its structure was determined and characterized by single-crystal X-ray diffraction analysis, elemental analysis, IR spectroscopy, and thermogravimetric analysis. The crystal structure of CP 1 is a three-dimensional framework with(3,5)-connected topology, where the bct ligands adopt a μ3-kO,kO,kO coordination mode connecting with three Cd centers and the bib ligands adopt a μ2-k N,k N coordination mode bridging two Cd ions. It crystallizes in monoclinic system, space group C2/c, with a = 2.6838(4), b = 1.24221(17), c = 1.8011(2) nm, β = 102.939(2)o, V = 5.8522(13) nm^3, Z = 8, C30 H27 CdN7O6, Mr = 694.00, Dc = 1.566 g/cm^3, F(000) = 2784, S = 1.055, R = 0.0294 and wR = 0.0731. Furthermore, solid-state photoluminescence measurements show that CP 1 produces strong emissions at room temperature. 展开更多
关键词 cadmium CPs synthetic crystal structure fluorescence
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Two Low-temperature Phase Transition Compounds Based on Quinuclidine Derivatives with Fluorescence
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作者 李俊毅 陈祥 +2 位作者 佟亮 邓思雨 陈立庄 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2021年第2期149-159,145,共12页
Two phase transition materials[iPrQ]2MnBr4(1,iPrQ=N-isopropyl-quinuclidinium)and[iPrQ]_(2)MnCl_(4)(2)were synthesized and characterized.Dielectric measurements and differential scanning calorimetry showed that the two... Two phase transition materials[iPrQ]2MnBr4(1,iPrQ=N-isopropyl-quinuclidinium)and[iPrQ]_(2)MnCl_(4)(2)were synthesized and characterized.Dielectric measurements and differential scanning calorimetry showed that the two compounds underwent reversible phase transitions at ca.–47 and–37℃,respectively.Variable-temperature single-crystal X-ray diffraction suggested that the two compounds underwent the same phase transitions from space group C2/c to Cc but at different temperature.The variable crystal structures indicated that the structural phase transitions of the compound were ascribed to the torsional movement of quinuclidine ring and the disappearance of the c-slide plane.The second harmonic generation(SHG)response further proved this structural phase transition.Fluorescence tests showed that the two compounds have strong fluorescence.The strong variations in dielectric anomalies make compounds 1 and 2 suitable for promising switchable dielectric materials. 展开更多
关键词 quinuclidine derivatives fluorescent compounds crystal structure second harmonic generation(SHG) permittivity properties
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Blue Luminescent Zinc(II)-and Cadmium(II)-1,4-phenylenediacetate Complexes 被引量:3
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作者 XU Yan-Qing ZHOU You-Fu YUAN Da-Qiang HONG Mao-Chun 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第10期1161-1166,共6页
Two mixed-ligand polymeric complexes formulated as {[Zn(pda)(bpy)]·0.5H2O}n (pda = 1,4-phenylenediacetate, bpy = 2,2'-bipyridine) 1 and {[Cd(pda)(bpy)]·1.5H2O}n 2 have been hydrothermally synthesi... Two mixed-ligand polymeric complexes formulated as {[Zn(pda)(bpy)]·0.5H2O}n (pda = 1,4-phenylenediacetate, bpy = 2,2'-bipyridine) 1 and {[Cd(pda)(bpy)]·1.5H2O}n 2 have been hydrothermally synthesized. Single-crystal X-ray diffraction analyses reveal that the structures of complexes 1 and 2 possess similar one-dimensional zigzag chains. Crystal data for compound 1: monoclinic, space group P21/c, a = 15.965(2), b = 8.305(1), c= 14.856(2) °A, β= 111.048(2)°, Mr = 422.73, V = 1838.2(4)°A^3, Z = 4, Dc = 1.528 g/cm^3, μ= 1.368 mm^-1, F(000) = 868, the final R = 0.0783 and wR = 0.1469 (w =1/[σ^2(Fo^2) + (0.0351P)^2+ 8.0014P], where P = (Fo^2 + 2Fc^2)/3) based on 2025 observed reflections with I〉 2σ(I); and those for compound 2: monoclinic, space group C2/c, a = 29.921 (7), b = 8.5400(17), c = 15.320(3) °A,β= 99.59(3)°, Mr = 487.75, V = 3859.9(14) °A^3, Z = 8, Dc = 1.668 g/cm^3, μ= 1.169 mm^-1, F(000) = 1936, the final R = 0.0723 and wR = 0.1612 (w = 1/[σ^2(Fo^2) + (0.0681P)^2 + 55.9577P], where P = (Fo^2 + 2Fc^2)/3) based on 2130 observed reflections with I〉 2σ(I). Fluorescent analyses show that both complexes exhibit intense blue luminescence (λmax = 485 nm for 1 and 475 nm for 2) upon excitation at 330 nm. 展开更多
关键词 zinc(Ⅱ) cadmium(Ⅱ) crystal structure coordination polymer fluorescence
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