新型配位聚合物[Nd_2(ad)_3(H_2O)_2]_n·n(4,4’-bpy)的水热合成及晶体结构

以NdCl3·xH2O,ad(己二酸)和4,4’_bpy为原料,在水热合成反应条件下,合成了配位聚合物[Nd2(ad)3(H2O)2]n·n(4,4’_bpy),利用元素分析、红外光谱、X射线单晶衍射和荧光分析对其进行了表征.该配位聚合物属正交晶系,Pbcn空间群,晶胞参数为a=2.2012(6)nm,b=0.7778(2)nm,c=1.9724(5)nm,α=β=γ=90°,V=3.3770(15)nm3,Z=4,d=1.796g/cm3,μ=3.108mm-1,F(000)=1800,R1=0.0430,R2=0.0560.通过己二酸配体羧基氧原子桥联Nd3+形成三维网状结构,4,4’_bpy通过H键的连接存在于孔道中.

Hydrothermal Synthesis and Crystal Structure of a Novel Coordination Polymer [Nd2(C6H8O4)3(H2O)2]n·n(4,4''''-bpy)

A novel coordination polymer [Nd_2(C_6H_8O_4)_3(H_2O)_2]_n·n(4,4'-bpy) was synthesized by synthesis reaction of adipic acid, 4,4'-bpy and NdCl_3·xH_2O. The structure was characterized by elemental analysis, thermal gravimetric analysis, IR spectroscopy, X-ray single crystal analysis and fluorescent analysis. The crystal data are orthorhombic crystal system, pbcn space group, Crystallographic date: a=2.201 2(6) nm, b =0.777 8(2)nm, c =1.972 4(5)nm,α=β=γ = 90°, V = 3.377 0(15) nm~3, Z = 4, d = 1.796 g/cm~3,μ= 3.108 mm~-1, F(000) = 1 800, R_1 = 0.043 0, R_2 = 0.056 0. X-ray analysis reveals that three-dimensional nets has formed between Nd~3+ and Nd~3+ by carboxyl of hexyl acid.