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Synthesis and structures of Cs4[(UO2)2(C2O4)(SO4)2(NCS)2] · 4H2O and (NH4)4[(UO2)2(C2O4)(SO4)2(NCS)2] · 6H2O

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Abstract

Single crystals of Cs4[(UO2)2(C2O4)(SO4)2(NCS)2] · 4H2O (I) and (NH4)4[(UO2)2(C2O4)(SO4)2(NCS)2] · 6H2O (II) have been synthesized and studied by X-ray diffraction. The crystals of both compounds are orthorhombic with the space group Pbam, Z = 2, and unit cell parameters a = 12.0177(3) Å, b = 18.6182(5) Å, c = 6.7573(10) Å, R = 0.0376 (I); a = 11.6539(9) Å, b = 18.3791(13) Å, c = 6.7216(5) Å, R = 0.0179 (II). The main structural units of crystals I and II are [(UO2)2(C2O4)(SO4)2(NCS)2]4− chains belonging to the crystal-chemical group A2K02B 22 M 12 (A = UO 2+2 , K02 = C2O 2−4 , B2 = SO 2−4 , M1 = NCS−) of the uranyl complexes. The uranium-containing chains are joined into a three-dimensional framework due to a system of electrostatic interactions with the cesium or ammonium ions in the structure of I. In the structure of II, this framework is additionally stabilized by hydrogen bonds involving the outer-sphere water molecules and ammonium ions.

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Authors and Affiliations

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

    I. V. Medrish & L. B. Serezhkina

  2. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 3, Novosibirsk, 630090, Russia

    A. V. Virovets & E. V. Peresypkina

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  1. I. V. Medrish
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  2. A. V. Virovets
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  3. E. V. Peresypkina
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  4. L. B. Serezhkina
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Original Russian Text © I.V. Medrish, A.V. Virovets, E.V. Peresypkina, L.B. Serezhkina, 2008, published in Zhurnal Neorganicheskoi Khimii, 2008, Vol. 53, No. 7, pp. 1115–1120.

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Medrish, I.V., Virovets, A.V., Peresypkina, E.V. et al. Synthesis and structures of Cs4[(UO2)2(C2O4)(SO4)2(NCS)2] · 4H2O and (NH4)4[(UO2)2(C2O4)(SO4)2(NCS)2] · 6H2O. Russ. J. Inorg. Chem. 53, 1034–1039 (2008). https://doi.org/10.1134/S0036023608070103

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  • DOI: https://doi.org/10.1134/S0036023608070103

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