基于柔性四羧酸的三个一维/二维/三维Zn(Ⅱ)/Co(Ⅱ)配合物的晶体结构及荧光性质

通过水热/溶剂热合成的方法制备了3个Zn(Ⅱ)/Co(Ⅱ)配合物{[Zn(H₂L)(H₂O)₃]·H₂O·0.5H₄L}_n(1)、{[Co(L)_0.5(4,4'-bpy)]·0.5H₂O}_n(2)和{[Co(L)_0.5(pbmb)(H₂O)]·H₂O}_n(3)(H₄L=5,5'-(hexane-1,6-diyl)-bis(oxy)diisophthalic acid,4,4'-bpy=4,4'-bipyridine,pbmb=1,1'-(1,3-propane)bis-(2-methylbenzimidazole))。结构分析表明配合物1为一维链结构。2为拓扑符号为(6⁴·7·8)(6·7²)的三重穿插网络结构。3是拓扑符号为(4·6²)(4²·6²·8²)的(3,4)-连接的二维网络结构。配合物1呈现出较好的荧光性质。     

基于5-羟甲基-1.3-苯二酸的两个四连接锌配合物的合成、结构和性质

在辅助配体4,4′-二(1H-咪唑-1-基)-1,1′-双苯（4,4′-DIB）的帮助下,5-羟甲基-1.3-苯二甲酸(H₂HIA)与Zn(BF₄)₂通过溶剂热或者水热反应构建出了两个具有sql网络的三维超分子配合物,即{[Zn₂(HIA)₂(4,4′-DIB)₂]·xGuest}_n (1, CCDC: 1989855 )和[Zn₂(HIA)₂(4,4′-DIB)₂]_n(2, CCDC: 1989856)。并对配合物的PXRD, IR, TGA和荧光等特性进行了表征。     

菲咯啉与1-萘甲酸配体共同构筑的多核Ca(Ⅱ)、双核Mn(Ⅱ)配合物的合成、结构及性质

设计、合成了2种配合物：[Ca(Phen)(Nap)₂]_n(1)和[Mn₂(Phen)₂(Nap)₄(H₂O)](2)(Phen=菲咯啉,HNap=1-萘甲酸)。通过红外光谱、元素分析、X射线单晶衍射和热重对其进行了结构表征。测定了配合物的激发光谱、发射光谱,以及配合物对人肺癌细胞(NCI-H460)、人乳腺癌细胞(MCF-7)、人肝癌细胞(HepG2)的体外抑制活性;利用紫外吸收光谱、荧光分光光度法研究了配合物与小牛胸腺DNA的相互作用。结果表明：配合物1、2的激发光谱和发射光谱具有很好的镜像关系,且配合物2的斯托克斯位移大于配合物1;配合物对3种癌细胞都有较好的抑制作用,但是2更优于1;配合物1和2与小牛胸腺DNA以静电作用发生沟面结合,结合常数分别为5.83×10³和6.46×10³L·mol^-1。     

一例新型三重穿插锌(Ⅱ)配位聚合物的合成及热稳定性能

在水热条件下，以1,4-二咪唑丁烷（1,4-BIB）、对苯二甲酸（H₂TPA）和Zn(NO₃)₂·6H₂O为原料,合成了一例新型的配位聚合物[Zn(1,4-BIB)_0.5(TPA)]_n(CCDC: 983546),其结构和性能经IR,元素分析,XRD和TGA表征。结果表明：[Zn(1,4-BIB)_0.5(TPA)]_n具有三重穿插三维多孔骨架结构，热稳定性较好。     

4,5-二氮芴-9-酮Cu(Ⅱ),Zn(Ⅱ)配合物的合成、晶体结构、热分析及理论计算

合成了4,5-二氮芴-9-酮(dafo)的Cu(Ⅱ), Zn(Ⅱ)配合物[Cu(dafo)₂(H₂O)₂] (NO₃)₂和[Zn(dafo)₂ (H₂O)₂] (NO₃)₂,通过单晶X射线衍射法确定了它们的结构.晶体结构分析表明,配合物分子中Cu(Ⅱ), Zn(Ⅱ)分别和来自两配体的四个氮原子及两个水分子中的氧原子配位,处于六配位的配位环境中,两配体基本处于同一平面,两水分子垂直于两配体所在平面,Cu(Ⅱ)处于畸变八面体中心,Zn(Ⅱ) 处于正常八面体中心,对两种配合物进行了元素分析、红外和热分析表征,在实验的基础上,采用Gaussian-98w中的DFT-B3LYP/LANL2DZ对两种配合物进行了全几何优化以及后续计算.     

新型锌(ΙΙ)配位聚合物的合成及其近白光温度传感性能

以1,2-二(4-吡啶基)乙烯，5-苯基间苯二甲酸和Zn(OAc)₂·2H₂O为原料，在水热条件下合成了一个新的Zn(ΙΙ)配合物[Zn₂(L)₂(bpe)₂]_n（1, H₂L=5-苯基间苯二甲酸，bpe=1,2-二(4-吡啶基)乙烯)，其结构经IR，元素分析，X-射线单晶衍射表征。1属三斜晶系，P-1空间群，晶胞参数a = 7.7192(3)Å，b = 17.4915(7)Å，c = 17.9700(7)Å，α= 113.5530(10)°，β= 99.1610(10)°，γ= 93.8840(10)°。室温固态荧光测试结果显示，在380 nm激发态下，配合物1在室温下550 nm处具有很强的发射峰，并对其变温荧光做了一定的探究，可作为优良的近白光发射的温度传感材料。      

基于V型双咪唑与二羧酸混合配体Zn2+配位聚合物的合成、结构与性质

通过溶剂热合法,制备了两种新的Zn²⁺配位聚合物{[Zn(bib)(bdc)]•DMF}_n(1)和{[Zn(bib)(bpdc)]•H₂O}_n(2)(bib=1,3-双(1-咪唑)苯,H₂bdc=1,4-苯二甲酸,H₂bpdc=4,4'-联苯二甲酸,DMF=N,N-二甲基甲酰胺）。通过单晶X-射线衍射确定了两个配合物的结构：配合物1属于三斜晶系,空间群为P-1,是一种由bib和ndc^2-配体混合连接二维网络结构,配合物2属于单斜晶系,空间群为P2₁/n,表现出了二重互穿二维网络结构。      

一个新的锌(II)配位聚合物的合成、结构及其可调节荧光性能

以4,4′-双（1H-咪唑基）联苯，5-苯基间苯二甲酸和Zn(OAc)₂·2H₂O为原料，在水热条件下合成了一个新的Zn(ΙΙ)配合物[Zn(L)(dib)]_n·3nH₂O[（1, H₂L=5-苯基间苯二甲酸，dib=4,4′-双（1H-咪唑基）\]联苯，其结构经IR，元素分析和X-射线单晶衍射表征。     

新型邻氧乙酸苯甲醛缩水杨酰腙一维Co(Ⅱ)配合物的合成与抑菌活性

以邻氧乙酸苯甲醛和水杨酰肼为原料,在甲醇中经回流反应合成了邻氧乙酸苯甲醛水杨酰腙配体（H₂L）; H₂L与Co(II)反应制得一种新型的一维配合物[(CoL)(MeOH)]_n（L=邻氧乙酸苯甲醛缩水杨酰腙）,其结构经IR,元素分析和X 射线单晶衍射表征。结果表明：[(CoL)(MeOH)]_n(CCDC: 720682)属单斜晶系,P2₁/c空间群,晶胞参数a=1.00415(14) nm, b=0.82123(11) nm, c=2.0833(3) nm, β=102.023(2)°, V=1.6803(4) nm³, Z=4, D_c=1.594 g·cm^-3, μ=0.1059 mm^-1, R=0.0494, wR₂=0.1047, F(000)=828。配合物为一维链状聚合物,每条一维链通过分子间的O-H…N键、C-H…O键以及强π-π堆积作用形成三维堆积结构。利用高斯09程序的密度泛函方法(B3ylp泛函)在6-31G*和LANL2DZ混合基组的条件下对配合物进行了优化和自然键轨道分析。并测试了配体和配合物的抑菌活性。结果表明：配合物对黄瓜灰霉和小麦赤霉的抑制率达到77.14%和51.52%。     

对苯二甲酸根桥联的双铜(Ⅱ)和双锰(Ⅱ)配合物的合成和长程磁交换作用

合成和表征了4种新型配合物[Cu₂(TPHA)(NO₂-Phen)₁](ClO₁)₂·H₂O、[Cu₂(TPHA)(Me-bpy)₁](ClO₁)₂、[Mn₂(TPHA)(NO₂-Phen)₁](ClO₁)₂·2H₂O和[Mn₂(TPHA)(Me-bpy)₁](ClO₁)₂(TPHA:对苯二甲酸根阴离子;NO₂-Phen:5-硝基-1,10-菲绕啉;Me-bpy:4,4'-二甲基-2,2'-联吡啶).测定了配合物的变温磁化率,并求出了交换积分J分别为-5.04、-6.52、-0.68及-0.73cm^-1.     

Double Hydrated Cobalt(II) Copper(II) and Nickel(II) Copper(II) Ammine Diphosphates

Synthesis of amorphous and crystalline double hydrated cobalt copper and nickel copper ammine diphosphates with a coordination structure is described.__________Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 3, 2005, pp. 369–372.Original Russian Text Copyright © 2005 by Voitenko, Zhilyak, Kopilevich.     

Cadmium(II), manganese(II) and zinc(II) compounds

Three new compounds, [Cd(μ ₃ -Hpdh)(μ₂-Cl)] _n (1), Mn(Hpdh)₂(H₂O)₂ (2) and Zn(Hpdh)₂ (H₂O)₂ (3) (H₂pdh =?pyridine-2,3-dicarbo-2,3-hydrazide), have been synthesized and characterized by elemental analysis, IR spectra, TG and single-crystal X-ray diffraction. Under hydrothermal conditions, H₂pdh is generated by an in situ acylation of H₂pda (H₂pda =?pyridine-2,3-dicarboxylic acid) with hydrazine hydrate. Complex 1 features a 2D layer structure constructed by a dinuclear Cd(II) building block. In complexes 2 and 3, hydrogen bonding interactions connect mononuclear structures into 3D supramolecular frameworks.     

Hexaaquacobalt(II) bis(hypophosphite) and hexaaquacobalt(II)/nickel(II) bis(hypophosphite)

The title compounds, hexa­aqua­cobalt(II) bis­(hypophosphite), [Co(H₂O)₆](H₂­PO₂)₂, and hexa­aqua­cobalt(II)/nickel(II) bis(hypophosphite), [Co_0.5Ni_0.5(H₂O)₆](H₂PO₂)₂, are shown to adopt the same structure as hexa­aqua­magnesium(II) bis­(hypophosphite). The packing of the Co(Ni) and P atoms is the same as in the structure of CaF₂. The Co^II(Ni^II) atoms have a pseudo‐face‐centred cubic cell, with a = b～ 10.3 Å, and the P atoms occupy the tetrahedral cavities. The central metal cation has a slightly distorted octahedral coordination sphere. The geometry of the hypophosphite anion in the structure is very close to ideal, with point symmetry mm2. Each O atom of the hypophosphite anion is hydrogen bonded to three water mol­ecules from different cation complexes, and each H atom of the hypophosphite anion is surrounded by three water mol­ecules from further different cation complexes.     

Crystal structures of ethylenediaminecadmium(II) tetracyanocadmate(II)-benzene(1/2) and ethylenediaminecadmium(II) tetracyanocadmate(II)

The crystal structure of ethylenediaminecadmium(II) tetracyanocadmate(II)-benzene(1/2),I, has been redetermined based on 1632 reflections collected anew for the crystal coated with epoxy resin, with a final conventionalR=0.038;I crystallizes in space groupP4₂22, witha=b=8.265(1) andc=15.512(3) Å, andZ=2. Ethylenediaminecadmium(II) tetracyanocadmate(II),II, is concluded to be identical with the residual metal complex host ofI, remaining after the liberation of the guest benzene molecules;II crystallizes from an aqueous solution containing bis- or tris-ethylenediaminecadmium(II) tetracyanocadmate(II) in space groupI4₁/acd, witha=b=14.366(1) andc=23.771(4) Å, andZ=16; refinement led to a conventionalR=0.043 for 1181 reflections. The bridging ethylenediamine ligand inI turns to a chelating one inII; dissociation and recombination should occur in the coordination sphere of the six-coordinate cadmium atom, whenII is derived fromI by the liberation of the guest molecules. Supplementary Data relating to this article are deposited with the British Library as Supplementary Publication No. SUP 82018 (30 pages).Dedicated to Professor H. M. Powell.     

Magnetic,epr and SOD studies of some Cu(II)-Cu(II), Cu(II)-Ni(II) and Cu(II)-Zn(II) imidazolate bridged complexes

Magnetic, spectroscopic and superoxide dismutase activity of imidazolate bridged [(Salala)Cu-Im-Cu(Salala)]Na, [(Salala)Cu-Im-Zn(Salala)]Na and [(Salala)Cu-Im-Ni(Salala)]Na (Salala=Salicyledenealiniate, Im=Imdiazolate) are described. The epr and electronic spectra of related mononuclear complexes, viz., [(Salala)Cu-OH(2)] and [(Salala)Cu-ImH] also described. Appearance of a half-field signal in polycrystalline and decrease in mu(eff) per copper(II) ion indicate super exchange coupling between copper(II) ion in [(Salala)Cu-Im-Cu(Salala)]Na binuclear complex. A pH-dependent epr and UV-vis study of 50% aqueous DMSO solution of binuclear complexes suggest that the complexes are stable in narrow pH range.     

N-acetyl-DL-leucinate cobalt(II), nickel(II) and zinc(II) complexes

Summary Complexes of the type M(AcLeu)₂ · B₂ (M = Co^II, Ni^II or Zn^II; B = H₂O, py, 3-pic, 4-pic; AcLeu =N-acetyl-DL-leucinate ion) and M(AcLeu)₂ B (M = Co^II or Zn^II and B = o-phen) were prepared and investigated by means of magnetic and spectroscopic measurements. The i.r. spectra of all the complexes are consistent with bidentate coordination of the amino acid to the metal ion. The room temperature solid state electronic spectra indicate that the symmetry of this species is closer toD _4h and that MO₆ and MO₄N₂ chromophores are present in the M(AcLeu)₂ · 2 H₂O and M(AcLeu)₂B_n · x H₂O (B = py, 3-pic, 4-pic, n=2 and x=0 for M = Ni^II; B = o-phen, n=1 and x=0 for M = Co^II; B = py, 3-pic, 4-pic, n=1 and x=1 for M = Co^II) complexes, respectively. By comparing the Dq values of the amino acid and those of other N-substituted amino acids previously studied, a spectrochemical series of the the cobalt(II) and nickel(II) complexes is proposed. The¹ H n.m.r. spectra of the zinc(II) complexes confirm the proposed stereochemistry.     

Metallatriazadiphosphorines of zinc(II), cadmium(II) and mercury(II)

Metallatriazadiphosphorine complexes corresponding to [{N(PPh₂NR)₂}M(OAc)] and [{N(PPh₂NR)₂}₂M], (R = Ph or SiMe₃; M = Zn, Cd or Hg) have been synthesized under strictly anhydrous and inert conditions by the reaction of the acyclic bis-silylated phosphazene ligand, [HN(PPh₂NSiMe₃)₂], or the bis-phenylated phosphazene ligand, [HN(PPh₂NPh)₂], with Zn, Cd and Hg acetate in 1:1 and 2:1 molar ratios. These complexes are highly soluble in common organic solvents, but unstable hydrolytically as well as thermally, even under reduced pressure. Molecular weight determinations in benzene indicated the monomeric nature of these complexes. Further, they have been characterized on the basis of elemental analysis and spectral studies: i.r. and n.m.r. (¹H, ¹³C and ³¹P) that plausibly reveal a trigonal planar and tetrahedral geometry around the metal atom in the complexes.     

Tetrathioureamercury(II) tetrathiocyanatomanganate(II)

In the title complex, [Hg(CH₄N₂S)₄][Mn(NCS)₄], the Hg and Mn atoms sit at special positions with symmetry and are tetrahedrally coordinated to four thio­urea (TU) S and four thio­cyanate (SCN) N atoms, respectively. The structure consists of discrete cationic and anionic [Hg(TU)₄]²⁺ and [Mn(SCN)₄]²⁻ complexes, and weak N_TU—H⃛S_SCN hydrogen-bond bridges exist between these complexes.     

Synthetic, spectral and solution studies on imidazolate-bridged copper(II)-copper(II) and copper(II)-zinc(II) complexes

Synthesis, spectral and solution studies on 2-ethyl imidazolate-bridged (2-EtIm) homo-binuclear copper(II)-copper(II) and hetero-binuclear copper(II)-zinc(II) homologue are described. Magnetic moment values of homo-binuclear complexes indicate that the imidazolate group can mediate antiferromagnetic interactions. Optical spectra of hetero-binuclear complex at varying pH values suggest that the imidazolate-bridged complex is stable over the pH-range 7.15–10.0.