4-甲基-1,2,3-噻二唑-5-甲酸铈/钐配合物的合成及晶体结构  

Synthesis and crystal structures of cerium and samarium complexes with 4-methyl-1,2,3-thiadiazol-5-carboxylic acid

作　　者：赵国良[1] 张珂剡 余玉叶[2] 

机构地区：[1]浙江师范大学行知学院,浙江金华321004 [2]金华职业技术学院,浙江金华321007

出　　处：《浙江师范大学学报（自然科学版）》2016年第3期298-302,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：浙江省公益性技术应用研究计划项目(2014C32014)

摘　　要：由4-甲基-1,2,3-噻二唑-5-甲酸(HL,C_4H_4N_2O_2S)和相应的稀土硝酸盐Ln(NO_3)_3·6H_2O(Ln=Ce;Sm)合成了2个配合物[Ln L_3(H_2O)_2]n,用元素分析和X-射线单晶衍射法确定了产物的组成和结构.分析表明:2种晶体属于异质同晶型,同属于三斜晶系,空间群为Pī;每个中心金属离子Ln(Ⅲ)与5个噻二唑甲酸根(L^-)中的6个羧基氧原子和2个配位水分子上的氧原子配位,配位数为8,形成一个三角十二面配位多面体.Two new complexes [ LnL3 （ H2O ） 2 ] n （ Ln = Ce, Sm）were synthesized from 4-methyl-1,2,3-thia- diazol-5-carboxylic acid （HL = C4HaN2O2S） and rare earth nitrate salts Ln（NO3）2·6H2O（Ln = Ce, Sm）. The crystal structures of the complexes were confirmed by elemental analysis and singal X-ray diffraction method. The crystal structures anlysis revealed that these two complexes belonged to isomorphism, crystallizes in the triclinic system, space group Pi. Every Ln （Ⅲ） cation was coordinated by six oxygen atoms from five L- anions and two oxygen atoms from two coordination water molecules, forming a triangular dodecahedron coordination geometry, the coordination number was eight.

关 键 词：4-甲基-1 2 3-噻二唑-5-甲酸 铈 钐 配合物 晶体结构 

分 类 号：O614.4[理学—无机化学]