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在水溶液中培养了甘氨酸镨、钕的针状晶体,元素分析结果表明可用Ln(Gly)_3Cl_3·3H_2O表示(Ln为Pr,Nd;Gly为甘氨酸)。用X射线衍射方法测定了Pr(Gly)_3Cl_3·3H_2O的单晶结构,其结构式为{[Pr(Gly)_3·(H_2O)_2]·Cl_3·H_2O}_n,属正交晶系,空间群P2:2:2_1,每一晶胞中有4个络合单元,形成一维链式聚合物·晶胞参数如下:α=4.779(1),b=12.052(3),c=30.953(11)。络合单元中镨为九配位,其配位多面体为畸变的三冠三角棱柱体。
The acicular crystals of praseodymium and neodymium glycinate were cultured in aqueous solution. The results of elemental analysis showed that Ln (Gly) _3Cl_3 · 3H_2O could be used as Ln (Pr, Nd; Gly is glycine). The crystal structure of Pr (Gly) _3Cl_3 · 3H_2O was determined by X-ray diffraction and its structure is {[Pr (Gly) _3 · (H_2O) _2] · Cl_3 · H_2O} _n. P2: 2: 2_1, with 4 complex units in each unit cell to form a one-dimensional chain polymer · Cell parameters are as follows: α = 4.779 (1), b = 12.052 (3), c = 30.953 ). Complex unit praseodymium nine coordinated, its coordination polyhedron distortion of the triangular crown prism.