二硝酸(N,N,N′,N′-四正丁基丁二酰胺)合铀(Ⅱ)酰配合物的合成和结构  

Synthesis and Structure of Dinitrato (N, N, N′, N′-Tetrabutylsuccinamide) Uranyl(Ⅱ)

作　　者：王汉章[1] 崔丽[1] 曹正白[1] 顾建胜[1] 朱利民[1] 郁开北[2] 

机构地区：[1]苏州大学化学系,苏州215006 [2]中国科学院成都分院分析测试中心,成都610041

出　　处：《化学学报》1993年第9期880-884,共5页Acta Chimica Sinica

摘　　要：合成的配合物UO_2[Bu_2NCO(CH_2)_2CONBu_2](NO_3)_2的晶体属四方晶系,a=b=3.3207(8),c=1.0711(4)nm,α=β=γ=90.00(0)°,V=11.811(7)nm^3,D_0=1.65g·cm^(-3),Z=16,空间群为14_1/α.配合物分子中铀酰离子由六个氧原子配位,其中四个来自两个硝酸根,另外两个来自有机配体的两个羰基,两个硝酸根被七原子环排斥而挤在一边,以铀原子为中心的六方双锥结构受到扭曲.The complex UO_2[Bu_2NCO(CH_2)_2CONBu_2](NO_3)_2 has been prepared by extraction method. The molecular and crystal Structures of the complex have been determined by four-circle X ray diffractometer. The crystal cell parameters are found to be a=b= 3.3207(8), c=1.0711 (4)nm, α=β=γ=90.00(0)°, V=11.811(7)nm^3, Z=16, D_c=1.65 g·cm^(-3). The crystal belongs to space group 14_1/a of tetragonal system. The result reveals that uranyl ion is coordinated to six oxygen atoms, four of them are from two nitrate groups and other two are from two carbonyl groups of organic ligand. Two nitrate groups are repulsed by seven membered ring to the one side, so the structure. of hexagonal bipyramid with center of uranium atom is distorted.

关 键 词：铀酰离子 络合物 晶体结构 

分 类 号：O614.62[理学—无机化学]