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3-(2′-噻吩甲酰)-1,1,1-三氟丙酮(HTTA)与铈(Ⅳ)形成Ce(TTA)_4配合物.本文报道其实验及测定结果.晶格属正交晶系,空间群Pc2_1b,晶体学常数a=10.699(2),b=17.436(5),c=20.680(2)(?).V=3847.1(?)~3,Z=4,F(000)=1736,D_c=1.77g·cm~(-3),.M_r=1028.82,μ=15.20cm~(-1).CAD4衍射仪,Mo-Kα射线收集数据.结构由重原子法解出,全矩阵最小二乘法修正,各向同性热参数.偏离因子R=0.148.晶体中每个铈原子与四个TTA中的八个氧原子配位,其配位多面体为扭曲的四方反棱柱,铈(Ⅳ)处于四方反棱柱体的中心,Ce-O平均键长2.333(?),O-Ce-O平均键角70.5°,晶体中部分噻吩环与三氟甲基处于无序状态.
Ce (TTA) _4 complexes were formed by the reaction of 3- (2’-thenoyl) -1,1,1-trifluoroacetone (HTTA) with cerium (Ⅳ) .The experimental and experimental results were reported in this paper. Crystallography, space group Pc2_1b, crystallographic constants a = 10.699 (2), b = 17.436 (5) and c = 20.680 (2) ) = 1736, Dc = 1.77g · cm -3, M_r = 1028.82, μ = 15.20cm -1. The data were collected by using the DiffractometerCAD 4 and Mo-Kα ray.The structure was solved by heavy atom method, Full matrix least square correction, isotropic thermal parameters. The deviation factor R = 0.148. Each crystal of cerium atoms and four TTA eight oxygen atoms coordination, the coordination polyhedron for the twisted square prism, cerium (Ⅳ) is located in the center of the square antiprism, the average bond length of Ce-O is 2.333 (?), The average bond angle of O-Ce-O is 70.5 °, some of the thiophene ring and trifluoromethyl are in disordered state.