2-羟基-1-萘甲醛半碳酰腙铬(Ⅲ)配合物的合成和晶体结构

本文合成了2-羟基-1-萘甲醛半碳酰腙铬(Ⅲ)单核配合物,通过红外、紫外、荧光光谱和单晶X-射线衍射等方法对其结构进行了表征。其晶体结构属于单斜晶系,空间群C2/c。光谱数据表明：配体2-羟基-1-萘甲醛半碳酰腙作为三齿螯合剂,通过酚氧,亚胺基氮和酮氧与铬(Ⅲ)离子配位。其铬(Ⅲ)中心为扭曲的六配位八面体几何构型。     

Synthesis,Crystal Structure and Interaction with DNA of a Novel Chromium（Ⅲ） Complex Containing Salicylaldehyde Semicarbazone

The novel chromium（Ⅲ） complex with salicylaldehyde semicarbazone was synthesized and characterized by IR spectra and single-crystal X-ray diffraction analysis. The crystal belongs to the orthorhombic system, space group Pbca with a = 8.9849（13）, b = 12.0475（16）, c = 34.522（5）A, V = 3736.9（9）A3, Z = 8, C16H18C1CrN6O5, Mr= 461.81, De= 1.642 g/cm^3, F（000） = 1896,A（MoKα） = 0.799 mm^-1, the final R = 0.0370 and wR = 0.0827 for 2908 observed reflections with I 〉 2σ（I）. The interaction between the chromium（Ⅲ） complex with calf thymus DNA （Ct-DNA） has been investigated by absorption spectroscopy, fluorescence spectroscopy and viscosity measurements. The results indicated that the complex was bonded to Ct-DNA through a non-classical intercalative mode.     

两种钒配合物的合成、表征及与Ct-DNA作用研究

合成了两种钒-邻香草醛衍生物配合物[VO2(C10H11O3N)](HOCH2CH2NH3) (1)和VO(C8H8O3N)2 (2); 用FT-IR和X-ray单晶衍射对它们的晶体结构进行了表征; 用紫外吸收光谱法、荧光光谱法、循环伏安法、粘度法等分析了两种配合物与小牛胸腺DNA (Ct-DNA)的作用; 结果表明配合物1以非插入方式与Ct-DNA作用, 配合物2则以插入方式与Ct-DNA作用.     

对物理化学电导测量电路图的改进

通过电学理论对测试溶液电导的等效电路进行分析,并在测试电导的实验条件下进行了电化学阻抗测量,以所获得的电化学阻抗数据为依据,提出电导测量中正确的测量方法。     

双核钒席夫碱配合物[VO(μ2-O)(o-Vanillin-en)]2的合成、结构及与DNA相互作用

在甲醇体系中乙酰丙酮氧钒与邻香草醛缩牛磺酸钾席夫碱在乙二胺存在下反应得到一个双核钒配合物。通过红外光谱和X-射线单晶衍射对其进行了表征。晶体结构表明该化合物的晶体属于三斜晶系，P1空间群，晶胞参数为a=0.898 67(19)nm，b=1.159 3(3) nm，c=1.200 0(3) nm，α=106.872(3)°，β=102.718(4)°，γ=94.905(3)°，Z=2。通过紫外吸收光谱法和循环伏安法研究了钒配合物与小牛胸腺DNA间的相互作用。紫外吸收光谱法得到配合物与DNA的结合常数为1.77×10⁴ dm³·mol^-1。     

天平与化学的发展

本文较系统地介绍了天平的简史及其在化学发展中的作用。     

Synthesis and Crystal Structure of a New Oxovanadium（V） Multicomponent Complex with Acylhydrazone and Benzoylhydrazine

A new oxovanadium（V） complex with the mixed ligand of 2-oxopropionic acid benzoylhydrazone （C10H10N2O3） and benzoylhydrazine （C7H8N2O）, VO（C7H7N2O）（C10H9N2O3）, has been synthesized. Its structure was determined by single crystal X-ray diffraction analysis. The crystal belongs to monoclinic system with space group P21/n and cell parameters： a=1.1136（4） nm, b=0.6217（2） nm, c=2.6038（9） nm, β=97.182（6）°, V= 1.7887（11） nm^3, Z=4, F（000）=836, Mr=407.28, Dc= 1.512 g/cm^3,μ （Mo Kα） =0.592 mm^-1, R1 =0.0445, wR2= 0.1203. Vanadium atom is 6-coordinated by carboxyl and carbonyl O atoms and N atom of one tridentate C10H10N2O3 to form two stable five-membered rings with the same edge, and the other coordinated atoms of N and O come from one bidentate benzoylhydrazine C7H8N2O. The title complex has a six-coordinated V center [VO（N2O3）] with a distorted octahedral arrangement. In the crystal lattice, there are hydrogen bonding interactions between two molecules.     

无机-有机多金属砷钒氧簇合物的合成及研究进展

多金属砷钒氧簇合物由于具有结构多样性、优良的物理特性以及广泛的应用前景而引起人们的关注。该类簇合物的合成战略是将有机配体和过渡金属配合物连接到砷钒氧骨架上以获得各种新奇结构。按此策略人们合成出一系列新奇的无机有机砷钒氧簇合物。本文综述了多金属砷钒氧簇合物的合成方法、结构性质等方面的研究进展,并对其今后研究前景进行了展望。     

Synthesis and Crystal Structure of [VO2（C17H11N3O2） ] [VO （C4H13N3）（C6H5N3O） ]（C2H5OH）

The reaction of VO（acac）2 with 2-hydroxyl-1-naphthaldehyde isonicotinyl hydrazone and amines （ethylenediamine or diethylenetriamine） in CH3OH yields crystals of novel vanadium compounds characterized by IR, NMR spectroscopic methods and X-ray single-crystal structure determination. Two different vanadium units exist in the crystal cell of [VO2（C17H11N3O2）][VO- （C4H13N3）（C6H5N3O）]（C2H5OH） which crystallizes in the triclinic system, space group P1 with a = 8.0104（17）, b = 13.898（3）, c = 14.955（3）A, α = 89.103（4）, β = 79.551（4）, γ = 78.352（4）°, V = 1603.3（6）A^3, Mr = 723.54, Dc = 1.499 g/cm^3, Z = 2, λ（MoKα） = 0.71073 ]A,μ= 0.644 mm^-1, F（000） = 748, the final R = 0.0547 and wR = 0.0997 for 8920 observed reflections with I 〉 2σ（I）. According to structure analysis, two different molecules are arranged in the lattice and the two vanadium atoms adopt octahedral and square pyramidal coordination geometries, respectively. The interactions between DNA and vanadium complexes have been investigated by UV-Vis absorption spectro- photometry.