基于双吡啶脲类Cd(Ⅱ)、Zn(Ⅱ)、Hg(Ⅱ)配合物的合成及晶体结构

间苯二胺和3-吡啶异氰酸酯在甲苯中加热回流得到双吡啶脲类配体L,然后将配体分别与CdSO_4·8H_2O,ZnI_2,HgI_2,HgCl_2进行配位反应,得到4个配合物{[Cd(L)(SO_4)(H_2O)_3]·H_2O}n(1),{[Zn(L)I_2]·2C_2H_5OH}n(2),{[Hg(L)I_2]·C_2H_5OH}n(3),[Hg(L)Cl_2]·H_2O(4),并用元素分析、FT-IR、X射线单晶衍射、粉末衍射对其进行了表征。配合物1形成一维螺旋链结构,配合物2和3形成一维"之"字链结构,配合物4形成32元环状结构。     

3-((5-(3-吡啶基)-2-(1,3,4-噁二唑基))硫代)-2,4-戊二酮Cu(Ⅱ)/Zn(Ⅱ)/Mn(Ⅱ)配合物的合成及其晶体结构

将配体3-((5-(3-吡啶基)-2-(1,3,4-噁二唑基))硫代)-2,4-戊二酮(HL)与Cu(OAc)_2·H_2O、Zn(OAc)_2·2H_2O和Mn(OAc)_2·4H_2O分别进行配位反应,得到3个配位聚合物{[Cu_2(L)_4]·CHCl_3}_n(1)、{[Zn(L)_2]·4CHCl_3}_n(2)和{[Mn(L)_2]·4CHCl_3}_n(3),并通过元素分析、红外光谱、粉末X射线衍射、单晶X射线衍射等对配合物的结构进行了表征。在固体状态下,配位聚合物1形成1D螺旋链状结构,配位聚合物2和3形成2D网状结构。     

双吡啶酰腙Schiff碱HgⅡ/Cd(Ⅱ)配合物的合成及其对甲醇蒸气的吸附

合成了双吡啶酰腙Schiff碱配体(L),并采用核磁共振氢谱、质谱、红外光谱和元素分析等手段对其结构进行了表征。进一步采用溶剂挥发法合成了2个配合物{[Cd(L)_2Cl_2]·2DMF·6H_2O}n (1)和[Hg(L)Cl_2]n (2)。通过X射线单晶衍射技术测定了配体及2个配合物的单晶结构,并对配合物的热稳定性及其在常温下对甲醇蒸气的吸附进行了考察。实验结果表明,2个配合物均为1D配位聚合物,配合物1对甲醇蒸气有较好的吸附能力。     

基于柔性多羧酸配体H3TCOPM构筑的Co(Ⅱ)配合物的合成与结构

以三苯甲烷-4,4′,4″-三羧酸(H_3TCOPM)为主配体,以含氮二齿配体4,4′-bipyridine(4,4′-bipy)为辅助配体,与Co(NO_3)_2·6H_2O通过溶剂热反应得到了2个配位聚合物{[Co_2(α-OH-TCOPM)(OH)(H_2O)_4]·DMF}_n(1)(α-OH-H_3TCOPM=三苯甲醇-4,4′,4″-三羧酸)和{[Co_3(α-OH-TCOPM)_2(4,4′-bipy)_3(H_2O)_6]·2H_2O}_n(2)。晶体结构分析表明,配合物1为四边形的二维层状结构,而配合物2为二维网状结构。采用红外光谱、粉末X射线衍射对配合物进行了表征,用热重分析仪研究了其热稳定性。     

由醚氧桥连四羧酸配体构筑的锰(Ⅱ)和锌(Ⅱ)配位聚合物的合成、晶体结构、荧光及磁性质（英文）

采用水热方法,用醚氧桥连四羧酸配体(H_4L)和菲咯啉(phen)、吡啶(py)分别与MnCl_2·4H_2O和ZnCl_2反应,合成了2个二维配位聚合物{[Mn_2(μ_6-L)(phen)_2]·5H_2O}_n (1)和{[Zn_2(μ-L)(py)]·H_2O}_n (2),并对其结构、荧光和磁性质进行了研究。结构分析结果表明2个配合物分别属于三斜和单斜晶系,P1和I2/a空间群。配合物1和2分别具有基于四核锰和双核锌的二维层结构。荧光和磁性研究结果表明,配合物2在室温下能发出蓝色荧光,聚合物1中相邻Mn(Ⅱ)离子间存在反铁磁相互作用。     

基于柔性三齿配体的镉(Ⅱ)和锌(Ⅱ)配合物的合成、结构和荧光性质（英文）

柔性三齿配体1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene(TITMB)和1,3,5-tris(triazol-1-ylmethyl)-2,4,6-trimethylbenzene(TTTMB)与金属镉(Ⅱ)和锌(Ⅱ)分别反应,合成了配合物{[Cd_3(SO_4)_4(TITMB)_2(H_2O)_4][Cd(H_2O)_6]·2CH_3OH}_n(1)和{[Zn(TTTMB)(HCOO)_2]·CH_3OH}_n(2)。配合物1和2均采用单晶X射线衍射、红外光谱、固态荧光、热重分析和元素分析进行了表征。在配合物1中,存在着由硫酸根离子和Cd(Ⅱ)构成的一维链,其再与配体TITMB配位形成二维层状结构,[Cd(H_2O)_6]~(2+)位于层与层中间平衡电荷。配合物2具有典型的63二维蜂窝状拓扑结构。配合物1和2中的二维层状结构,均通过氢键作用延伸成为三维结构。配合物1和2均具有较高的热稳定性,并且在固态下释放蓝色荧光。     

基于柔性四羧酸配体构筑的两个镉(Ⅱ)配位聚合物的晶体结构及荧光性质（英文）

通过溶剂热和水热合成的方法制备了2个Cd(Ⅱ)配位聚合物[Cd_2(L)(DMF)_(1.5)(H_2O)_2]_n(1)和{[Cd(L)_(0.5)(4,4′-bpy)(H_2O)]·2H_2O}_n(2)(H_4L=5,5′-(己烷-1,6)-双-(氧基)-二-间苯二甲酸)。结构分析表明配合物1是一个(4,4)-连接的sql拓扑网络,拓扑符号为{4~4·6~2}_2。配合物2是一个(4,4,4)-连接的三重穿插的bbf网络,拓扑符号为(6~6)(6~4·8~2)。配合物1和2都呈现出较好的热稳定性和荧光性质。     

4-(2-(4-咪唑)苯乙烯基)吡啶和三种芳香二羧酸的Cd(Ⅱ)配位聚合物的合成、结构及荧光性质

以4-(2-(4-咪唑)苯乙烯基)吡啶(ISPE)为配体,分别与间苯二甲酸(1,3-H_2BDC)、4,4′-联苯二甲酸(4,4′-H_2BPDC)和4,4′-二苯乙烯二甲酸(4,4′-H_2STDC)及过渡金属盐Cd(NO3)2·4H_2O通过溶剂热自组装形成了3种配位聚合物晶体{[Cd_2(ISPE)_2(1,3-BDC)_2]·DMF}_n(1)、[Cd(ISPE)(4,4′-BPDC)]_n(2)和[Cd(ISPE)_2(4,4′-STDC)(H_2O)_2]_n(3)。并用单晶X射线衍射、PXRD、红外光谱、元素分析、热重等对其进行了表征。单晶解析结果表明:配位聚合物1是二维层状网格结构,配位聚合物2是一个六重穿插的类金刚烷三维网格结构,配位聚合物3是由一维网格结构通过氢键和分子间作用力堆积形成的三维网格结构。另外还研究了它们的室温固态荧光性能。     

基于2-(4′-羧基苯基)咪唑-4,5-二羧酸构筑的三个镉/锌配位聚合物的合成、拓扑结构、荧光光谱及DNA作用（英文）

以2-(4′-羧基苯基)咪唑-4,5-二羧酸(H_4CPhIDC,C_(12)H_8N_2O_6)为配体,用溶剂热合成了3种配位聚合物{[Cd2(CPhIDC)(bimb)]·H_2O}_n(1)、{[Cd_2(CPhIDC)(phen)_2]·3H_2O}_n(2)、{[Zn_2(CPhIDC)(bpp)]·1.5H_2O}_n(3)(bimp=1,4-双咪唑基-丁烷,phen=1,10-菲咯啉,bpp=1,3-双(4-吡啶基)-丙烷)。用元素分析、红外光谱、粉末X射线衍射和单晶X射线衍射对配合物进行了表征和结构分析。结构分析表明,主配体以完全去质子化CPhIDC4-的形式与中心金属离子形成以μ_4和μ_5为配位模式的二维及三维聚合物。配合物1和3是三维网络结构,同时呈现(3,4,5)-连接的(5·6·7)(4·52·6·72)(4·52·6·74·82)拓扑结构,两者的不同之处是中心离子和辅助配体。配合物2是二维波纹状渔网结构,呈现44·62拓扑结构,在其空间填充上又类似于DNA双螺旋链的单螺旋结构。测定了产物的固体荧光光谱;用EtBr荧光探针法研究了配体及配合物与ct-DNA的相互作用。     

基于柔性苯二乙酸构筑的三个钴配合物的晶体结构和电化学性质

利用水热法合成了3个钴配位聚合物{[Co_(1.5)(opda)_(1.5)(mbib)_2(H_2O)_2]·H_2O}_n(1),{[Co(mpda)(mbib)]·H_2O}_n(2)和{[Co(ppda)(mbib)]·H_2O}_n(3),并对其进行了元素分析、红外光谱、热重分析和X射线单晶衍射测定。结果表明这些配合物的不同结构主要是由于中心钴髤阳离子的配位几何结构、柔性苯二甲酸和双(咪唑)配体的配位方式和构象的不同。同时,还研究了3个钴配位聚合物的热稳定性和电化学性质。     

含吡啶二脲配体汞(Ⅱ)、镉(Ⅱ)配合物的合成及其晶体结构

以2,2''-二氨基二苯醚和4-吡啶异氰酸酯反应合成了含吡啶二脲配体（L）,并分别与HgCl₂和Cd（ClO₄）₂进行了配位反应,得到2个配位聚合物{[Hg（L）Cl₂]·2DMF}_n（1）和{[Cd（L）₂（H₂O）₂]（ClO₄）₂·4DMF·2H₂O·2CH₃OH}_n（2）,采用¹H NMR、MS、FTIR和元素分析等对化合物L进行了表征。通过X射线单晶衍射技术测定了配体及2个配合物的单晶结构,结构解析表明,2个配合物均为一维链状结构。进一步考察了2个配合物的热稳定性及其对甲醇蒸气的吸附性能。     

Syntheses,Crystal Structures,and Magnetic Properties of Carboxylate-Bridged Copper(II) Complexes with Bis(2-Pyridylmethyl)Amino Acids

Tetradentate Schiff-base carboxylate-containing ligands, bis(2-pyridylmethyl)amino-5-valeric acid (Hpmva) and bis(2-pyridylmethyl)amino-6-caproic acid (Hpmca), react with copper(II) perchlorate to give rise to the carboxylated bridged chain complexes {[Cu(μ-pmva)(H₂O)](ClO₄)}_n (1) and {[Cu(μ-pmca)(H₂O)](ClO₄)}_n (2). These complexes have been characterized by X-ray crystallography, spectroscopic, and variable-temperature magnetic susceptibility measurements. In 1 and 2, each of the copper(II) ions exhibit CuN₃O₂ coordination environments with the three nitrogen atoms of the ligand and one oxygen atom belonging to the carboxylate group of an adjacent molecule occupying the basal position and a water molecule coordinated in the axial position. The electronic spectra of the complexes are significantly affected by the coordination geometry. Magnetic susceptibility measurements indicate that complexes exhibit very weak ferromagnetic interactions.     

Self-assembly of three Cd(II) complexes: 0-D, 1-D,and 3-D structures based on 2-(1H-imidazol-1-methyl)-1 H-benzimidazole

Three new complexes, [Cd(L)I₂]₂ (1), {[Cd(L)I₂]?·?DMF} _n (2), and [Cd₂(L)₄(μ ₂-I)I(H₂O)] _n (3), have been obtained through self-assembly of an unsymmetrical ligand 2-(1H-imidazol-1-methyl)-1H-benzimidazole (L) with Cd(II) salts. Single-crystal X-ray diffraction shows that 1 displays a dimeric structure in which two Cd(II) ions are bridged by two bidentate bridging L. Complex 2 exhibits a 1-D chain structure (···Cd–L–Cd–L···) constructed by L bridging Cd(II) ions. In 3, the Cd(II) ions are five-connected nodes and linked by L and iodide leading to the 3-D network. Complexes 2 and 3 are synthesized maintaining the same solvents and stoichiometric ratio of metal and ligand at different reaction temperature. The different structures of the complexes indicate that the temperature plays a significant role in construction of the complexes. Luminescent properties of 1–3 have been investigated in the solid state at room temperature.     

杂金属杯[4]配位聚合物的合成与表征

合成了4个杂金属杯[4]配位聚合物{[Cd（L）（tpa）]·3H₂O}_n（1）,{[Zn2（L）₂（tpa）₂]·3H₂O}_n（2）,{[Co（L）（oba）]·2DMA·0.5H₂O}_n（3）和{[Zn（L）（oba）]·DMA}_n（4）（L=2-（1H-咪唑基-甲基）-6-（3-（1H-咪唑基-甲基）-5-叔丁基-2-羟基）苄基-4-叔丁基苯酚,H₂tpa=对苯二甲酸,H₂oba=4,4''-二苯醚二甲酸）,并通过元素分析、热重、红外光谱、固态紫外、单晶X射线衍射和粉末X射线衍射对其进行了表征。单晶结构分析表明晶体1是单斜晶系,P2₁/n空间群,而晶体2,3和4均为三斜晶系,P1空间群。化合物1,2,3和4是由0维[M（N₄O₂C₂₉H₃₆）]（M=Zn,Co,Cd）的杂金属杯[4]与配体对苯二甲酸和4,4''-二苯醚二甲酸形成的一维配位聚合物。     

杂金属杯[4]配位聚合物的合成与表征

合成了4个杂金属杯[4]配位聚合物{[Cd（L）（tpa）]·3H₂O}_n（1）,{[Zn₂（L）₂（tpa）₂]·3H₂O}_n（2）,{[Co（L）（oba）]·2DMA·0.5H₂O}_n（3）和{[Zn（L）（oba）]·DMA}_n（4）（L=2-（1H-咪唑基-甲基）-6-（3-（1H-咪唑基-甲基）-5-叔丁基-2-羟基）苄基-4-叔丁基苯酚,H₂tpa=对苯二甲酸,H₂oba=4,4''-二苯醚二甲酸）,并通过元素分析、热重、红外光谱、固态紫外、单晶X射线衍射和粉末X射线衍射对其进行了表征。单晶结构分析表明晶体1是单斜晶系,P2₁/n空间群,而晶体2,3和4均为三斜晶系,P1空间群。化合物1,2,3和4是由0维[M（N₄O₂C₂₉H₃₆）]（M=Zn,Co,Cd）的杂金属杯[4]与配体对苯二甲酸和4,4''-二苯醚二甲酸形成的一维配位聚合物。     

Syntheses and structures of three Mn(II) coordination polymers assembled from a dithiocarboxylic acid and N-donor ligands

Three new complexes, {[Mn(dtb)(bpe)·2H₂O]·H₂O} _n (1), {[Mn(dtb)(bpa)·2H₂O]·H₂O} _n (2), and {[Mn(dtb)(phen)]} _n (3) [H₂dtb?=?5,5′-dithiobis(2-nitrobenzoic acid), bpe?=?1,2-bis(4-pyridyl)ethene, bpa?=?1,2-bi(4-pyridyl)ethane, phen?=?1,10-phenanthroline], have been synthesized under hydrothermal conditions with Mn(OAc)₂·4H₂O, dtb, and different N-donor ligands. X-ray structure analyses of 1 and 2 reveal analogous structures with 1D helical chains and 2D 4⁴ chiral layers. The structure of 3 shows a 1D chain which is outwardly decorated with phen ligands. These neutral polymeric complexes exhibit structural diversity due to the different coordination modes of the flexible dtb ligand and the N-donor ligands. The thermogravimetric analyses and X-ray powder diffractions of 1–3 are also presented.     

Synthesis and electrochemical study of 2-(2-pyridyl)benzothiazole complexes with transition metals (CoII, NiII, and CuII). Molecular structure of aquabis[2-(2-pyridyl)benzothiazole]copper(II) diperchlorate

The reactions of 2-(2-pyridyl)benzothiazole (1) with MX₂·nH₂O salts (M = Ni^II, Co^II, or Cu^II; X = Cl or ClO₄; n = 0–2) in EtOH afforded the corresponding complexes. Depending on the nature of the counterion in the starting metal salt, the reactions give compounds of composition M(1)Cl₂·nH₂O or Cu(1)₂(ClO₄)₂·H₂O. The molecular and crystal structure of the Cu^II(1)₂(ClO₄)₂·H₂O complex was established by X-ray diffraction. The copper atom in this complex has a distorted tetragonal-pyramidal ligand environment and is coordinated by four nitrogen atoms of two ligand molecules and one water molecule. Electrochemical study of the ligand and the resulting complexes by cyclic voltammetry and at a rotating disk electrode demonstrated that ligand 1 stabilizes reduced forms of complexes containing Ni, Co, or Cu atoms in the oxidation state +1. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1738–1744, October, 2006.     

Syntheses,structures, and properties of two 2-D Cd(II) complexes based on 2-(1H-imidazol-1-methyl)-1H-benzimidazole and polycarboxylate ligands

Two 2-D Cd(II) complexes, {[Cd(imb)(bdc)(H₂O)]·CH₃OH}_n (1) and {[Cd(imb)(Hbtc)(CH₃OH)]·2H₂O·CH₃OH}_n (2), have been synthesized by reactions of CdCl₂·2.5H₂O with 2-(1H-imidazol-1-methyl)-1H-benzimidazole (imb) and 1,3-benzenedicarboxylic acid (H₂bdc) or 1,3,5-benzenetricarboxylic acid (H₃btc). Single-crystal X-ray diffraction shows that 1 possesses an infinite 2-D layered structure in which all the carboxylates chelate Cd(II) and imb bridge Cd(II) ions. Complex 2 also features an infinite 2-D layered structure and imb ligands also bridge Cd(II) ions, but two carboxylates of each 1,3,5-benzenetricarboxylate coordinate to Cd(II) in monodentate or chelating mode, leaving the third one, which is not deprotonated, uncoordinated. IR spectra, fluorescent properties, and thermogravimetric analyses of both complexes have been investigated.     

基于双吡啶脲类Cd(Ⅱ)、Zn(Ⅱ)、Hg(Ⅱ)配合物的合成及晶体结构

间苯二胺和3-吡啶异氰酸酯在甲苯中加热回流得到双吡啶脲类配体L,然后将配体分别与CdSO₄·8H₂O,ZnI₂,HgI₂,HgCl₂进行配位反应,得到4个配合物{[Cd（L）（SO₄）（H₂O）₃]·H₂O}_n（1）,{[Zn（L）I₂]·2C₂H₅OH}_n（2）,{[Hg（L）I₂]·C₂H₅OH}_n（3）,[Hg（L）Cl₂]·H₂O（4）,并用元素分析、FT-IR、X射线单晶衍射、粉末衍射对其进行了表征。配合物1形成一维螺旋链结构,配合物2和3形成一维“之”字链结构,配合物4形成32元环状结构。