Abstract
Single crystals of (NH4)(CN3H6)[UO2(SeO3)2] (I) are synthesized and studied by X-ray diffraction analysis. The compound crystallizes in the triclinic crystal system with the unit cell parameters: a = 7.0051(2) A, b = 9.4234(3) A, c = 9.5408(3) A, α = 88.727(1)°, β = 70.565(1)°, γ= 77.034(1)°, space group P1, Z = 2, R = 0.0224. The main structural units of crystals I are the [UO2(SeO3)2]2− chains of the crystal-chemical group AB2B11 (A = UO22+, B2= SeO32−, B11= SeO32−) of the uranyl complexes. The uranium-containing complexes are joined into a three-dimensional framework by the ammonium and guanidinium ions and a system of hydrogen bonds.
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