论文部分内容阅读
镧系元素配合物[C_4H_9O]~+[Ln(S_2CNC_4H_8)_4]~-(Ln=Pr和Sm)是从LnCl_3和NH_4(S_2CNC_4H_8)在THF中反应45h而得到的。[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,晶体属单斜晶系,空间群为P2_1/C,单胞参数分别为a=1.2233,b=1.5220,c=1.8308nm,β=98.62°(Pr—配合物);a=1.2208,b=1.5200,c=-1.8352nm,β=98.59°(Sm—配合物),晶体结构是从Patterson和Fou—rier方法解得,并用全矩阵最小二乘法修正,最后偏离因子R=0.057(Pr)和R=0.042(Sm)。两个化合物是属于异质同晶,它们阴离子部分是由Pr和Sm原子和配位体的八个S原子构成扭变的三角形十二面体的配位结构。
The lanthanide complexes [C_4H_9O] ~ + [Ln (S_2CNC_4H_8) _4] ~ - (Ln = Pr and Sm) were obtained from the reaction of LnCl_3 and NH_4 (S_2CNC_4H_8) in THF for 45h. The crystal and molecular structure of [C_4H_9O] ~ + [Ln (S_2CNC_4H_8) _4] ~ was obtained by single crystal X-ray structure analysis. The crystal belongs to the monoclinic system with space group P2_1 / C and the unit cell parameters are a = A = 1.2208, b = 1.5200, c = -1.8352 nm, β = 98.59 ° (Sm-complex), the crystal structure is: 1.2233 b = 1.5220 c = 1.8308 nm and β = From the Patterson and Fou-rier methods, and corrected by the full matrix least square method, the final deviation factors R = 0.057 (Pr) and R = 0.042 (Sm). Two compounds are heterogeneous isomorphism, and their anionic part is the coordination structure of triangular dodecahedron composed of Pr and Sm atoms and eight S atoms of the ligand.