论文部分内容阅读
镧系配合物[C_4H_9O]~+[Ln(S_2CNC_4H_8)_4]~-是从LnCl_3(Ln=La和Nd)和NH_4(S_2CNC_4H_8)在THF中反应得到的。 [C_4H_9O]~+[Ln(S_2CNC_4H_8)_4)~-的晶体和分子结构通过单晶X-射线结构分析获得,结晶学参数列于下表。 晶体结构是从Patterson和Fourier方法解出,并用全矩阵最小二乘法修正。最后偏离因子对于La配合物,R=0.064,R_w=0.0681;而对于Nd配合物;R=0.051,R_w=0.059。晶体由正离子[C_4H_9O]~+和负离子[Ln(S_2CNC_4H_8)4]~-组成,在负离子中ln原于是由八个硫原子构成扭变的三角形十二面体配位。Ln-S平均距离分别为2.974(La)和2.908(Nd)。
Lanthanide complex [C_4H_9O] ~ + [Ln (S_2CNC_4H_8) _4] ~ - was obtained from the reaction of LnCl_3 (Ln = La and Nd) and NH_4 (S_2CNC_4H_8) in THF. The crystal and molecular structures of [C_4H_9O] ~ + [Ln (S_2CNC_4H_8) _4) ~ - were obtained by single crystal X-ray structure analysis and the crystallographic parameters are given in the following table. The crystal structure is solved by the Patterson and Fourier methods and corrected by the full matrix least square method. The final deviation factor for La complex is R = 0.064, R_w = 0.0681; for Nd complexes; R = 0.051, R_w = 0.059. The crystal consists of positive ions [C_4H_9O] ~ + and negative ions [Ln (S_2CNC_4H_8) 4] ~. In the negative ions, ln is originally coordinated by a triangular dodecahedron composed of eight sulfur atoms. The average Ln-S distances were 2.974 (La) and 2.908 (Nd), respectively.