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合成了一种新的砷-钒-氧簇合物(H2en)6[As8V14O42(SO4)]28H2O(en为乙二胺),用元素分析、IR和TG-DTA等手段进行了表征,并用X射线衍射法测定了晶体结构。结果表明, 该晶体属单斜晶系,P21/c空间群,晶胞参数a = 20.9235(4),b = 11.9382(2),c = 43.5783(6) 牛琤 = 102.13,V = 10642.1(3) ?,Z = 4,Mr = 4678.01,Dc = 2.920 g/cm3,F(000) = 8944,m = 7.437 mm-1,R = 0.0735,wR = 0.1361。结构测定表明,结构中2个簇阴离子{[As8V14O42(SO4)]6-}与有机铵阳离子[H2en]2+之间靠静电作用相结合,同时与H2O通过氢键构成无限的三维骨架结构。
A new arsenic-vanadium-oxygen cluster (H2en) 6 [As8V14O42 (SO4)] 28H2O was synthesized and characterized by means of elemental analysis, IR and TG-DTA. The crystal structure was determined by the ray diffraction method. The results show that the crystal belongs to the monoclinic space group P21 / c with cell parameters of a = 20.9235 (4), b = 11.9382 (2) and c = 43.5783 ) ?, Z = 4, Mr = 4678.01, Dc = 2.920 g / cm3, F (000) = 8944, m = 7.437 mm-1, R = 0.0735, wR = 0.1361. The structure determination shows that the electrostatic interactions between the two cluster anions {[As8V14O42 (SO4)] 6-} and the organic ammonium cation [H2en] 2+ combine with H2O to form an infinite three-dimensional framework structure through hydrogen bonding.