硝酸二(α-羟基异丁酸)二水合钕的合成、表征及晶体结构  

Synthesis, Characterization and Structure Determination of Di(α-Hydroxyisobutyrate) Diaquo Neotlymium Nitrate

作　　者：徐诚[1] 倪兆艾[1] 

机构地区：[1]杭州大学化学系,杭州310028

出　　处：《高等学校化学学报》1992年第1期10-13,共4页Chemical Journal of Chinese Universities

基　　金：浙江省自然科学基金

摘　　要：合成的标题配合物Nd(C_4H_7O_3)_2·NO_3·2H_2O晶体属C2/c空间群,晶胞参数:a=0.8996(1)nm,b=0.8601(1)nm,c=2.1111(3)nm,β=92.38(1)°Z=4,晶体中配合物呈聚合链状结构,硝酸根无序分布在靠近对称中心的2个相关位置,钕的配位数为8。The synthesis, the crystal structure of neodymium complex Nd (C4H7O3)2. NO3 . 2H2O are presented in this report. The crystal structure was determined by X-ray single crystal diffrarction techniques. The structure was solved by the Patterson method and Fourier techniques and refined by full-matrix least square to give a final R = 0. 036 for 1358 reflections. The crystal belongs to monodinic system with space group C2/c. The unit cell parameters are: a = 0. 8996(1) nm, b=0. 8601 (1) nm, c=2. 1111(3) nm, β=92. 38(1)°, V=1. 6320 nm3, Z = 4, D=1. 83 g/cm3. It is confirmed that neodymium is bonded with eight oxygen atoms. The nitrate group in the complex is not coordinated to neodymium, it bad two positions in the crystal. Each two neodymium atoms are connected with two bridging carboxyl group to form a chain polymeric molecule.

关 键 词：钕配合物 α-羟基异丁酸 晶体结构 

分 类 号：O614.335[理学—无机化学]