Abstract

Single crystals of Ba3[UO2(C2O4)2(NCS)]2 · 9H2O are synthesized and studied by X-ray diffraction. The crystals are orthorhombic, space group Fddd, Z = 16, and the unit cell parameters are a = 16.253(3) A, b = 22.245(3) A, c = 39.031(6) A. The main crystal structural units are mononuclear complex groups [UO2(C2O4)2NCS]3− of the crystal-chemical family (AB201M1 (A = UO22+, B01 = C2O42−, M1 = NCS−) of the uranyl complexes linked into a three-dimensional framework by electrostatic interactions and hydrogen bonds involving oxalate ions and water molecules.

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