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通过水热反应合成了一种稀土化合物[Nd(H2O)4(NO3)3]·(4,4’-bipy)2·H2O(bipy=4,4’-联吡啶)(1),并对该化合物进行了X-射线单晶结构表征。该化合物属于正交晶系,空间群为P212121,晶胞参数如下:a=7.1190(5),b=16.098(1),c=24.734(1),C20H26N7NdO14,Mr=732.72,V=2834.6(3)3,Z=4,Dc=1.717g/cm3,S=1.201,μ(MoKα)=1.910mm–1,F(000)=1468,R=0.0449和wR=0.0722。该化合物具有孤立结构特征,其中稀土原子具有扭曲的双帽四方反棱柱构型。该化合物分子之间通过氢键形成二维波浪层状结构。光致发光研究发现该化合物发射强的紫色光。
A rare earth compound [Nd (H2O) 4 (NO3) 3] · (4,4’-bipy) 2 · H2O (bipy = 4,4’-bipyridine) The compound was characterized by X-ray single crystal structure. The compound belongs to the orthorhombic system with space group P212121 and the unit cell parameters are as follows: a = 7.1190 (5), b = 16.098 (1), c = 24.734 (1) , C20H26N7NdO14, Mr = 732.72, V = 2834.6 3) 3, Z = 4, Dc = 1.717 g / cm3, S = 1.201, μ (MoKα) = 1.910 mm-1, F (000) = 1468, R = 0.0449 and wR = 0.0722. The compound has isolated structural features in which the rare earth atoms have a twisted double-cap tetragonal anti-prismatic configuration. The compound molecule forms a two-dimensional wavy layered structure by hydrogen bonding. Photoluminescence studies have shown that the compound emits intense violet light.