X-ray Diffraction Study of K₃[UO₂(C₂O₄)₂(NCS)] 3H₂O

Yu. N. Mikhailov^a, I. M. Orlova^a, R. N. Shchelokov^a†, Yu. E. Gorbunova^a,
Zh. V. Akhmerkina^b, L. B. Serezhkina^b, and V. N. Serezhkin^b

^aKurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

^bSamara State University, ul. Akademika Pavlova 1, Samara, 443011 Russia

Received June 1, 2005

Abstract—The single crystals of K₃[UO₂(C₂O₄)₂(NCS)] · 3H₂O were studied by X-ray diffraction. The com-
pound crystallizes in the monoclinic system, space group P2₁/n, Z = 4, a = 10.673 Å, b = 12.041 Å, c =
13.856Å, = 110.18, R = 0.0290. The basic structural units of the crystals of I are the island complex groups
[UO₂(C₂O₄)₂NCS]^3– corresponding to the crystal-chemical group AB⁰¹₂M¹ (= U, ⁰¹ = C₂, ¹ =
NCS) of uranyl complexes and connected into a three-dimensional framework through electrostatic interac-
tions and through hydrogen bonds involving potassium ions and water molecules.

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