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报道了单晶Pr(C8H5NO4) 1 5·H2 O的水热合成和晶体结构。中心离子Pr3 +处于 9配位的环境中。来源于配体的两个羧基螯合Pr3 +形成两个四元环。其它四个羧基通过桥键连接中心离子。晶体数据如下 :正交晶系 ,空间群Pbcn ,a =1 2 2 2 2 8( 7)nm ,b =0 80 2 95 ( 5 )nm ,c =2 5 61 1 1 ( 1 4)nm ,α =90°,β=90°,γ=90°。配体通过螯合和桥键金属离子在ac平面内构成地板形网格。羧基采用 η1,3 方式连接层平面 ,沿着b轴构成一维通道。与金属离子配位的水分子悬挂在隧道中
The hydrothermal synthesis and crystal structure of single crystal Pr (C8H5NO4) 1 5 · H 2 O were reported. The central ion Pr3 + is in a 9-coordinated environment. Two carboxyl groups derived from the ligand chelate Pr3 + to form two four-membered rings. The other four carboxyl groups are bridged to the central ion. The crystal data are as follows: orthorhombic, space group Pbcn, a = 1 2 2 2 2 8 7 nm, b = 0 80 2 95 nm, c = 2 5 61 1 1 (14) nm, α = 90 °, β = 90 °, γ = 90 °. Ligands form floor-shaped meshes in the ac plane by chelation and bridging metal ions. The carboxyl group is connected to the layer plane by η1,3 and forms a one-dimensional channel along the b-axis. Water molecules coordinated with metal ions hang in tunnels