Preparation and Crystal Structure of a New Uranyl Sulfate Templated by a Bis‐isothiouronium Cation. Issue 11 (22nd June 2020)

• Record Type: Journal Article
• Authors: Charkin, Dmitri O.; Bezzubov, Stanislav I.; Siidra, Oleg I.; Borisov, Artem S.; Kalmykov, Stepan N.
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 646:Issue 11/12(2020)
• Page Start: 540
• Page End: 543
• Publication Date: 2020-06-22
• Subjects: Uranyl sulfate -- Crystal structure -- Uranium -- Bis‐isothiouornium cation -- Templated structure -- Redox processes; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.202000168
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract : Crystals of a new uranyl sulfate (C2 N4 H8 S2 )[UO2 (SO4 )2 ]· 0.3H2 O (1 ) templated by a relatively rare bis‐isothiouronium cation, were formed upon evaporation of aqueous solutions containing uranyl acetate, thiourea, and excess sulfuric acid. The new compound is orthorhombic, P 21 21 21, a = 6.928(2) Å, b = 13.398(3) Å, c = 15.225(3) Å, Z = 2. Its crystal structure is comprised of [UO2 (SO4 )2 ] moieties linked by hydrogen bonds formed between the template cations and terminal oxygen atoms of the sulfate tetrahedra. The C2 N4 H8 S2 2+ template is most likely formed in situ during a redox reaction between uranyl cation and thiourea in a strongly acidic medium, with UO2 2+ partially reduced to U 4+ . Abstract :