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在水溶液中合成并培养了甘氨酸镨(或钐)配合物单晶,元素分析结果表明,化学式可用Ln(Gly)_2·Cl_3·3H_2O表示(Ln=Pr,Sm;Gly为甘氨酸)。X射线衍射测定结果,其结构式为(Pr_2Cl_2(Gly)_4(H_2O)_6]·4Cl,属单斜晶系,空间群P2_1/n,Z=2,晶胞参数为:a=1.0055(2),b=1.4619(3),c=1.0041(2)nm,β=102.09(1)°。每两个中心Pr~(3+)由两个甘氨酸羧基桥联成双核配合物。Pr~(3+)还与一个甘氨酸羧基双齿配位,再与3个O(H_2O)和一个Cl配位。Pr~(3+)的配位数为8。配位多面体由两个三角十二面体组成。
Synthesized and cultured single crystals of praseodymium (or samarium) glycinate in aqueous solution. The elemental analysis shows that the chemical formula can be represented by Ln (Gly) _2 · Cl_3 · 3H_2O (Ln = Pr, Sm; Gly is glycine). The results of X-ray diffractometry show that the crystal structure of Pr_2Cl_2 (Gly) _4 (H_2O) _6] · 4Cl is monoclinic with space group P2_1 / n and Z = 2. , b = 1.4619 (3), c = 1.0041 (2) nm, β = 102.09 (1) ° .And two centers Pr 3+ were bridged by two glycine carboxyl groups into dinuclear complexes. +) Is also coordinated with a glycine carboxyl bidentate, and then coordinated with three O (H 2 O) and one Cl. The coordination number of Pr 3+ is 8. The coordination polyhedron consists of two triangular dodecahedrons .