氨荒酸配合物（[M（MeBnNCS2）3], M=Sb（Ⅲ）, Bi（Ⅲ））的合成、晶体结构及抑菌活性

合成了2种新的N-甲基-N-苄基二硫代氨基甲酸锑[Sb（MeBnNCS₂）₃]（1）和铋[Bi（MeBnNCS₂）₃]（2）配合物。通过元素分析、红外光谱、¹H NMR、热重对其进行表征,并用X-射线单晶衍射测定了晶体结构。配合物1和2均属于单斜晶系,P2₁/c空间群。配合物1的晶胞参数为：a=0.9551（7）nm,b=1.3575（10）nm,c=2.4681（17）nm,β=104.01（2）°,Z=4,V=3.105（4）nm₃,D_c=1.520g·cm^-3,F（000）=1440,μ=1.314mm^-1,最终偏离因子R₁=0.0339,wR₂=0.0832,S=1.010;配合物2的晶胞参数为：a=1.3390（6）nm,b=0.9975（5）nm,c=2.4261（5）nm,β=98.433（7）°,Z=4,V=3.205（2）nm³,D_c=1.653g·cm^-3,F（000）=1568,μ=5.912mm^-1,最终偏离因子R₁=0.0398,wR₂=0.0864,S=1.089。在这2个配合物中,中心金属离子M（Ⅲ）与来自3个配体中的6个硫原子配位,配合物1形成6配位的畸变的八面体构型;配合物2则形成6配位的畸变的五角锥构型。在配合物2中,分子之间又通过Bi…S弱相互作用构成二聚体结构。利用琼脂扩散法测试了配合物的抑菌活性,结果表明配合物1对4种受试菌株具有较强的抑菌活性。     

Synthesis,Crystal Structure and Antibacterial Activity of Dibenzyl Dithiocarbamate Bismuth Complex

A new complex, {Bi(Ⅲ)[S2CN(CH2C6H5)2]3}2·2CH3CN, was synthesized and characterized by elemental analysis, IR, TG, 1H NMR and X-ray single-crystal diffraction. The complex crystallizes in the triclinic system, space group P1, with a = 12.705(6), b = 13.430(6), c = 15.489(12) , α = 102.135(12), β = 99.649(12), γ = 111.521(9)°, Z = 1, V = 2315(2) A3, Dc = 1.531 g·cm-3, F(000) = 1068, μ = 4.116 mm-1, the final R = 0.0559, w R = 0.1069 and S =1.056. The coordinated geometry of Bi(Ⅲ) with six sulfur atoms from three ligands is a distorted pentagonal pyramidal configuration, and the structural system is formed by weak interactions of Bi···S between two molecules. The complex was valued for its antibacterial activity by agar-streak method. It was found that the complex is weakly active against three of the five tested bacterial organisms.     

Bi3+、Eu3+共掺双钙钛矿Gd2ZnTiO6荧光粉制备及其温度传感性能

采用高温固相法制备了一系列具有双发射中心的Gd₍2(1-x-y))ZnTiO₆∶xBi³⁺,y Eu³⁺荧光粉。采用X射线衍射、扫描电子显微镜、荧光光谱、寿命衰减曲线和变温发射光谱等方法,系统地研究了该材料的结构、发光性能和温度传感特性。在Gd₂ZnTiO₆∶Bi³⁺,Eu³⁺荧光粉中,Bi³⁺和Eu³⁺离子占据了Gd³⁺离子的位置。在紫外激发下,Eu³⁺的激发光谱和Bi³⁺的发射光谱存在光谱重叠,表明从Bi³⁺到Eu³⁺可能存在能量传递。通过荧光强度比技术探究了Bi³⁺蓝光发射与Eu³⁺红光发射的不同温度响应特性。在293～473 K温度范围内,测得Gd₂ZnTiO₆∶Bi...     

Syntheses,Crystal Structures and Antibacterial Activities of Complexes [（C_9H_（18）NS_2）_3M（Ⅲ）]（M = Sb and Bi）

Two novel complexes,[(C9H18NS2)3Sb(III)](1) and [(C9H18NS2)3Bi(III)](2),were synthesized and characterized by elemental analysis,IR,TG and X-ray single-crystal diffraction.Both 1 and 2 crystallize in the monoclinic system,P21/c space group.The data for 1:a = 1.6964(3),b = 1.02149(17),c = 2.5650(3) nm,β = 121.824(8)°,Z = 4,V = 3.7766(10) nm3,Dc = 1.293 g·cm-3,F(000) = 1536,μ = 1.082 mm-1,the final R = 0.0500,wR = 0.1562 and S =1.072.The data for 2:a = 1.6802(9),b = 1.0256(6),c = 2.5083(10) nm,β = 121.77(3)°,Z = 4,V = 3.675(3) nm3,Dc = 1.486 g·cm-3,F(000) = 1664,μ = 5.159 mm-1,the final R = 0.0481,wR = 0.1055 and S =1.076.The coordinated geometry of the central M(III) with six sulfur atoms from three ligands is a distorted pentagonal pyramid configuration.The dimer structural system is formed by the weak interactions of M…S and C-H…S between two molecules.The complexes were valued for their antibacterial activities by agar-streak method.It was found that 1 is active against the four test bacterial organisms.