配合物Nd(C_7H_7N_2O_2)_3(H_2O)_3的合成及其晶体结构

Synthesis and Crystal Structure of Nd(C_7H_7N_2O_2)_3(H_2O)_3

用水热法合成了3,5-二氨基苯甲酸与Nd(Ⅲ)的配合物Nd(C7H7N2O2)3(H2O)3(1),其结构经IR,元素分析和X-射线单晶衍射仪表征。1为单核结构,属六方晶系,R3空间群,晶胞参数:a=1.887 29(18)nm,b=1.887 29(18)nm,c=0.603 53(12)nm,β=90,°γ=120°,V=1.861 7(4)nm3,Z=3,μ=2.154 mm-1,Dc=1.744 g.cm-3,R1=0.014 3,wR2=0.033 2。1中Nd(Ⅲ)与来自3个3,5-二氨基苯甲酸的6个氧原子及3个配位水的氧原子进行配位,形成9配位化合物。

The complex Nd（C7H7N2O2）3（H2O）3（1） was synthesized by hydrothermal method from 3,5-diaminobenzoic acid and Nd（NO3） 3. The structure was characterized by IR, elemental analysis and X-ray single crystal diffraction. The crystal of 1 belongs to rhombohedral system, space group R3 with a=1.887 29（18）nm,b=1.887 29（18）nm,c=0.603 53（12）nm,β=90,°γ=120°,V=1.861 7（4）nm^3,Z=3,μ=2.154 mm^-1,Dc=1.744 g·cm^-3,R1=0.014 3,wR2=0.033 2. 1 exhibited a nine-coordinated complex in which Nd（Ⅲ） is coordinated by six oxygen atoms of three 3, 5-diaminobenzoic acid anions and three oxygen atoms of three water molecules.