Abstract
Compounds (CN3H6)2[UO2(OH)2(NCS)]NO3 (I) and β-Cs3[UO2(NCS)5] (II) are synthesized and studied by IR spectroscopy and single-crystal X-ray diffraction. I and II crystallize in the orthorhombic system. For I, a = 12.2015(13) Å, b = 7.3295(8) Å, c = 16.310(2) Å, space group Pnma, Z = 4, and R = 0.0327; for II, a = 21.7891(6) Å, b = 13.5120(3) Å, c = 6.8522(2) Å, space group Pnma, Z = 4, and R = 0.0268. In structure I, complex groups form infinite chains [UO2(OH)2(NCS)] n− n belonging to the AM 22 M 1 crystal chemical group of uranyl complexes (A = UO 2+2 , M 2 = OH−, and M 1 = NCS−). The main structural elements of crystals II are mononuclear [UO2(NCS)5]3− groups belonging to the AM 15 group of uranyl complexes (A = UO 2+2 and M 1 = NCS−). In I and II, uranium-containing complexes are connected with outer-sphere cations by electrostatic interactions, and in I a system of hydrogen bonds also contributes to their binding. Specific features of the packing of complex [UO2(NCS)5]3− groups in the structures of two modifications of Cs3[UO2(NCS)5] are discussed.
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Original Russian Text © V.N. Serezhkin, E.V. Peresypkina, M.O. Karasev, A.V. Virovets, L.B. Serezhkina, 2014, published in Kristallografiya, 2014, Vol. 59, No. 2, pp. 242–247.
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Serezhkin, V.N., Peresypkina, E.V., Karasev, M.O. et al. Synthesis and crystal structure of (CN3H6)2[UO2(OH)2(NCS)]NO3 and β-Cs3[UO2(NCS)5]. Crystallogr. Rep. 59, 196–201 (2014). https://doi.org/10.1134/S1063774514020199
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DOI: https://doi.org/10.1134/S1063774514020199