苯磺酰β-丙氨酸镨配合物的合成及晶体结构

Synthesis and Crystal Structure of Praseodymium Complex with N-Benzenesulphony-β-alanine

合成了配合物{[Pr2 L6 (H2O)4]?H 2O}n (L = 苯磺酰b-丙氨酸), 并通过单晶X射线衍射确定了晶体结构。化合物(C27H41.21N3O17.6PrS3)属单斜晶系, 空间群P21 /n, 晶胞参数:a = 9.412(1), b = 18.019(2), c = 22.522(4) , b = 100.43(1), Z = 4, Mr = 926.59, Dc = 1.638 g/cm3, V = 3756.3(8) 3, F(000) = 1888, m = 1.540 mm1 。PrⅢ离子为9配位的单帽四方反棱柱结构, 羧基氧原子与镨原子间存在3种配位方式, 镨原子之间通过2种类型的羧基连接使配合物分子呈无限链状结构。

The complex C27H41.21N3O17.6PrS3 {[Pr2L6(H2O)4]?H 2O}n (L = benzenesulphony-b-alanine) has been synthesized and characterized by single-crystal X-ray diffraction. The crystal is of monoclinic, space group P21/n with a = 9.412(1), b = 18.019(2), c = 22.522(4) , b = 100.43(1), Z = 4, Mr = 922.38, Dc = 1.631 g/cm3, V = 3756.5(9) 3 and F(000) = 1871.3. The praseodymium ion is nine-coordinated with a distorted monocap- square antiprism geometry. There exist three coordination types between the carboxylic oxygen and praseo- dymium atoms. The structure of the complex can be viewed as a one-dimensional chain by two kinds of carboxylic bridges among the praseodymium atoms.