两个基于双(4-吡啶-4-苯基)胺的钴(Ⅱ)、锌(Ⅱ)配合物的合成和晶体结构

以双(4-吡啶-4-苯基)胺(BPPA)和4,4-(六氟)双(苯甲酸)(H2hfipbb)或对苯二甲酸(p-H2bdc)为配体,采用溶剂热法与M(NO3)2·6H2O(M=Co、Zn)组装合成了2个新的配合物{[Co2(BPPA)(hfipbb)2·(H2O)3]·6H2O}n(1)、{[Zn2(BPPA)2(p-bdc)2]·H2O·DMF}n(2),利用元素分析、X射线粉末衍射(PXRD)、红外光谱等手段分别对它们进行了表征,并用X射线单晶衍射仪测定了配合物的单晶结构。X射线单晶衍射测定结果表明:配合物1和2均为二维结构。配合物1具有新的拓扑结构。配合物2的二维结构又可以组成三维框架结构。配合物1为正交晶系,Pnna空间群,a=2.640 9(2)nm,b=1.715 78(13)nm,c=1.504 11(11)nm,V=6.8154(9)nm3,Z=4,μ=0.571 mm-1,F(000)=2 592,Dc=1.245 g·cm-3,Mr=1 383.76,R1=0.066 6,w R2=0.208 9(I>2σ(I));配合物2为单斜晶系,C2/c空间群,a=2.796 70(9)nm,b=1.814 82(6)nm,c=2.303 13(7)nm,β=102.136 0(10)°,V=11.428 3(6)nm3,Z=8,μ=0.906 mm-1,F(000)=4 944,Dc=1.391 g·cm-3,Mr=1 196.85,R1=0.039 8,w R2=0.106 4(I>2σ(I))。此外,热重分析表明配合物1和2均具有良好的热稳定性。     

二氯·双(N,N-二乙基-2-辛硫基乙酰胺)合钯(Ⅱ)配合物的合成及其结构

在有机溶剂中合成了反式-[Pb(DEOTA)_2Cl_2],C_(28)H_(58)N_2O_(2)Cl_2S_2Pd,对配合物进行了组成分析、摩尔电导、差热-热重、紫外、红外等测试,并经X射线单晶结构分析,确定了配合物的结构.配合物晶体属单斜晶系,空间群C2/ca=32.513(9)(?),b=12.174(3)(?),c=9.798(4)(?),β=106.27(3)°,V=3722(1)(?)~3,Z=4,D_c=1.24g·cm~(-3).     

三联吡啶羧基Zn(Ⅱ)，Cu(Ⅱ)和Fe(Ⅱ)配合物研究

本文通过溶剂热法合成了三个基于4’-羧基-2,2’∶6’,2"-三联吡啶(HL)的单核配合物,其分子式为[ML₂]·4H₂O(1,M=Zn(Ⅱ);2,M=Cu(Ⅱ);3,M=Fe(Ⅱ)),并分别对其进行了元素分析、波谱、单晶和粉末衍射表征。晶体结构测试结果表明3个配合物为异质同晶结构,都属于四方晶系的I42d空间群。配合物1~3都是1个二价金属离子和2个羧基未配位且去质子化的三齿螯合配体L配位形成的单核结构,通过分子间π-π堆积和氢键作用拓展成三维超分子网络结构。由于二价Zn离子的全充满d¹⁰电子构型,配合物1与其配体相比具有明显的室温固态蓝色荧光发射性质。     

反式—[(μ—Cl)_2Pd_2(DEHSO)_2Cl_2]配合物的合成及其结构

用萃取法合成反式-[(μ-Cl)_2Pd_2(DEHSO)_2Cl_2](DEHSO系二(2-乙基已基)亚砜的简写),对配合物进行了组成分析、摩尔电导、差热-热重、紫外、红外测试,并经X射线单晶结构分析,确定了配合物的晶体和分子结构。     

钴-硫氰酸根与钠-苯并15-冠-5配合物的研究

本文用凝胶法合成了ENa(苯并15-冠-5)(H_2O)]_2[Co(NCS)_4]的晶体,并对配合物进行了元素分析、溶解性能、摩尔电导、差热—热重分析和红外光谱等各项物理性质的测试,并经X射线单晶结构分析确定了配合物的结构。     

三联吡啶羧基Zn(Ⅱ),Cu(Ⅱ)和Fe(Ⅱ)配合物研究

本文通过溶剂热法合成了三个基于4'-羧基-2,2':6',2"-三联吡啶(HL)的单核配合物,其分子式为[ML₂]·4H₂O(1,M=Zn(Ⅱ);2,M=Cu(Ⅱ);3,M=Fe(Ⅱ)),并分别对其进行了元素分析、波谱、单晶和粉末衍射表征。晶体结构测试结果表明3个配合物为异质同晶结构,都属于四方晶系的I42d空间群。配合物1~3都是1个二价金属离子和2个羧基未配位且去质子化的三齿螯合配体L配位形成的单核结构,通过分子间π-π堆积和氢键作用拓展成三维超分子网络结构。由于二价Zn离子的全充满d₁₀配位构型,配合物1与其配体相比具有明显的室温固态蓝色荧光发射性质。     

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-苯氧基甲基-4-(4-甲基苯基)-5-(2-吡啶基)-1,2,4-三唑的铜(Ⅱ)、镉(Ⅱ)配合物的合成、晶体结构和光学性质

以3-苯氧基甲基-4-(4-甲基苯基)-5-(2-吡啶基)-1,2,4-三唑(L)为配体分别合成了2个金属配合物即[Cu2L2Cl4]·2H2O(1)和[Cd3L2(μ2-Cl)6]n·2n CH3CN(2),对其进行了红外、紫外、热重、粉末衍射、元素分析和晶体结构等表征。配合物1和2都属于三斜晶系,空间群都为P1,单晶结构分析表明,在配合物1中,中心铜( Ⅱ)原子具有畸变三角双锥构型[Cu N3Cl2];配合物2是配位聚合物,每个重复单元有3个Cd( Ⅱ)原子和2个不同的Cd( Ⅱ)配位中心,Cd1( Ⅱ)原子具有中心对称的畸变八面体构型Cd Cl4N2,Cd2( Ⅱ)原子具有畸变的八面体构型Cd Cl4N2。     

一种新型钌(Ⅱ)-组氨酸配合物[RuCl(Me_2SO)_2(L-His)]·H_2O的合成及其结构表征(英文)

本文通过将抗癌活性化合物cisRuCl2Me2SO4与L组氨酸在乙醇溶液中或在溶剂热条件下反应均得到了配合物RuClMe2SO2LHis1。X射线单晶结构分析表明该配合物的晶体属变形八面体,空间群P3121a=b=14.057516c=15.6373分子中含一个结晶水。该配合物中L组氨酸配体分别通过氨基氮、咪唑氮、羧基氧与中心原子钌配位。     

2-(N，N-二羧甲基氨甲基)氢醌金属配合物(钴、镍、锌)的合成、晶体结构及电化学性质研究

合成了3个新的氢醌金属配合物:[Co(H2cah)(H2O)2].H2O(1),Ni(H2cah)(H2O)2].H2O(2),[Zn(H2cah)(CH3OH)(H2O)].H2O(3)(H4cah=2-(N,N-二羧甲酸氨甲基)氢醌),通过X-射线单晶衍射,红外光谱,元素分析对它们进行了表征。这些配合物均为单核结构,并且通过分子间的氢键形成了无限的超分子网状结构。电化学研究显示配合物1中的Co2+/Co+对和配合物2中的Ni2+/Ni+对的氧化还原是一个不可逆的过程,但是氢醌到半醌之间的转换是一个准可逆的过程。     

Catalytic application of dinuclear palladium(II) bis(thiosemicarbazone) complex in the Mizoroki-Heck reaction

A convenient synthesis of new square planar dinuclear palladium(II) terephthaldehyde bis(thiosemicarbazone) complex has been described. The compositions of the complex have been established by elemental analysis, spectral methods and single crystal X-ray crystallographic technique. The new complex acts as an active recyclable homogeneous catalyst for the Mizoroki-Heck reaction of electron deficient (activating) and electron rich (deactivating) aryl halides with various olefins under optimized conditions.     

Ligation properties of 2-acetyl-2-thiazoline semicarbazone (ATsc): Isolation, spectroscopic and X-ray study of ATsc and its Cu(II) and Ni(II) complexes

A new ligand, 2-acetyl-2-thiazoline semicarbazone (ATsc), has been prepared and characterized by a variety of physico-chemical techniques. Likewise, the metal complexes [CuCl₂(ATsc)] and [Ni(ATsc)₂](NO₃)₂ · H₂O have been isolated and characterized through elemental analysis, IR, UV–Vis–NIR diffuse reflectance and magnetic susceptibility, as well as, in the case of the copper complex, by means of EPR. Moreover, the structures have been determined by X-ray diffraction. In both complexes the Schiff base acts as a tridentate ligand through N(1), N(2) and O atoms, making two five-membered chelate rings. The copper complex consists of monomeric molecules in which the copper atom is five coordinated in a distorted square-pyramidal geometry, with one ATsc and two chlorine ligands. The complex cation of nickel possesses approximately a non-crystallographic C₂ symmetry. The environment around the nickel atom may be described as a distorted octahedral geometry with the metallic atom coordinated to two ATsc ligands.     

双马来腈二亚胺合铂与DNA的作用

本文以紫外-可见光谱、荧光光谱及黏度法研究了双马来腈二亚胺合铂与DNA的作用。紫外-可见光谱的研究表明,与DNA作用后,双马来腈二亚胺合铂在可见区的吸收显示出了减色效应,并伴随着吸收峰的蓝移。Scatchard图的分析结果表明,双马来腈二亚胺合铂与DNA的作用位点与溴化乙锭不同。黏度法实验表明,双马来腈二亚胺合铂与DNA作用后降低了DNA的相对黏度。这些研究结果表明,双马来腈二亚胺合铂以静电作用方式与DNA结合。本研究有助于深入理解双马来腈二亚胺合铂的作用机理并开发这种潜在的新型光动力治疗剂。     

Synthesis,characterization and catalytic activity of Rh (PPh3)2 (en)Cl complex

Ethylenediamine bis(triphenylphosphine) monochlororhodium has been prepared by the interaction of Wilkinson's catalyst and ethylenediamine in benzene. The complex has been isolated and characterized by conventional and spectroscopic methods. The catalytic activity of the complex was investigated for the hydrogenation of 1-octene as a model reaction at a hydrogen pressure of 1 atmosphere (101 kPa) using methanol as a solvent. The influence of various factors such as catalyst, substrate concentrations and temperature have been studied. The hydrido complex has been identified as an intermediate product by IR and NMR studies. The experimental data are in accordance with a rate expression of the form: .     

DNA interaction studies of ruthenium(II) polypyridyl complex : [Ru(dmb)2(ITAP)](ClO4)2 (ITAP = isatino [1,2-b]-1,4,8,9-tetraazatriphenylene)

A new ligand ITAP and its complex [Ru(dmb)₂(ITAP)](ClO₄)₂ (ITAP = isatino [1,2-b]-1,4,8, 9-tetraazatriphenylene, dmb = 4,4′-dimethyl-2,2′-bipyridine) have been synthesized and characterized by elemental analysis, Fast atom bombardment mass spectra, Electrospray mass spectra, and ¹H NMR. Thermal denaturation and absorption titration experiments show the complex binds to calf thymus DNA (CT-DNA) with moderate affinities. Viscosity measurements and thermal denaturation indicate that the DNA-binding mode could be intercalative interaction. The Ru(II) complex in the presence of plasmid pBR322 DNA has been found to promote the cleavage of plasmid pBR322 DNA from the supercoiled Form I to the open circular Form II upon irradiation. Mechanisms for DNA cleavage by the complex were also investigated.     

含5-氯水杨醛Schiff碱配体的镍和铜配合物的合成及晶体结构

合成了2个含三齿Schiff碱配体和单齿N-杂环分子的多核过渡金属配合物:1个含5-氯水杨醛缩对硝基苯甲酰腙(H2L1)和吗啡啉(Mf)的镍髤配合物[Ni(L1)(Mf)](1),1个含5-氯水杨醛缩水杨酰腙(H2L2)和吡啶(Py)的铜髤配合物[Cu2(L2)2(Py)2](2),并通过元素分析、红外光谱、紫外光谱以及单晶衍射等手段进行表征。在配合物1中,中心Ni髤与酰腙配体(L12-)的酚氧、亚胺氮、去质子酰胺氧原子以及中性吗啡啉氮原子配位形成平面四方形的N2O2配位构型,相邻配合物通过分子间氢键作用构筑成一维超分子链状结构。配合物2中含有2个晶体学上独立的双核铜髤配合物,相邻配合物分子的酚氧原子分别桥联2个[Cu(L2)(Py)]基本单元,形成2个含有Cu2(μ-O)2核心的配合物。每个Cu髤原子具有五配位的NONO(O)四角锥配位构型。     

EMR Study of Bis(benzene-dithiocarboxylato)copper(II) Complex in Solution and Magnetically Diluted in Different Host Lattices

EMR studies of bis(benzene-dithiocarboxylato)copper(II) in the form of the pure solid sample, in solution as well as magnetically diluted in the host lattices of the corresponding complexes of Ni^II, Zn^II, Pd^II, and Pt^II are reported. Two different samples (violet and blue) have been obtained in the Ni^II complex host lattice with EMR spectra indicating a superposition of several individual Cu^II signals. The EMR spectrum of the violet sample is explained by a superposition of the individual signals of (thio-, perthio-carboxylate)Cu^II and bis(perthiocarboxylate)Cu^II while that for the blue Cu/Ni(dtb)₂ complex, as well as for Cu/Pd (dtb)₂ is explained by different positions of the Cu^II species in the host lattices. The EMR spectrum typical for the magnetically diluted sample caused by self redox reaction has been recorded in the pure solid sample of copper(II) dithiocarboxylate complex.     

Synthesis and Crystal Structure of Mixed-Ligand Ni(II) Complex of N-(1-Phenyl-3-methyl-4-benzylidene-5-pyrazolone) p-Nitrobezoylhydrazide and Pyridine

A novel mixed-ligand nickel complex, [Ni(PMBP—PNH) (Py)₃], [PMBP—PNH=N-(1-phenyl-3-methyl-4-benzylidene-5-pyrazolone) p-nitrobezoylhydrazide; Py = pyridine], has been synthesized by the hydrothermal method and characterized by elemental analysis, IR spectrum, thermal analysis, and single-crystal X-ray diffraction. The X-ray diffraction reveals that the nickel (II) ion in the title complex is in a slightly distorted octahedral arrangement of the ONO donor atoms of primary ligand PMBP-PNH and three N-donor atoms in the secondary ligand pyridine.     

Synthesis,crystal structure,and luminescence of a quaternary binuclear europium complex [Eu2(phth)2(Hphth)2(phen)2(H2O)4]

A quaternary binuclear europium complex [Eu₂(phth)₂(Hphth)₂(phen)₂(H₂O)₄] (H₂phth?=?phthalic acid, phen?=?1,10-phenanthroline) has been synthesized. The structure was determined by X-ray crystallography which reveals that it is binuclear with each europium nine-coordinate. Intermolecular hydrogen bonds link the complex units to form a 3D supermolecular network. Its properties have been studied by means of luminescence spectrum and thermal analysis. Fluorescence spectra show that the complex exhibits strong red emission.     

Copper(II), palladium(II) and platinum(II) chloride complexes with 5-amino-2-tert-butyltetrazole: Synthesis, characterization and cytotoxicity

Complexes CuL₃Cl₂, PdL₂Cl₂ and PtL₂Cl₂, where L is a novel ligand from the series of 2-substituted 5-aminotetrazoles, namely 5-amino-2-tert-butyltetrazole (1), have been synthesized by the reaction of metal(II) chlorides with 1 and characterized by IR spectroscopy, thermal and X-ray analyses. The crystallographic structural analysis of these complexes revealed that 1 acts as a monodentate ligand coordinated to the metal via endocyclic N4 atom. Platinum complex demonstrates promising cytotoxicity against human cervical carcinoma cells with IC₅₀ value average between those of cisplatin and carboplatin.