Preparation and Crystal Structure of a New Uranyl Sulfate Templated by a Bis‐isothiouronium Cation | Zendy

Charkin Dmitri O. | Zendy; Bezzubov Stanislav I. | Zendy; Siidra Oleg I. | Zendy; Borisov Artem S. | Zendy; Kalmykov Stepan N. | Zendy

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Preparation and Crystal Structure of a New Uranyl Sulfate Templated by a Bis‐isothiouronium Cation

Author(s) -

Charkin Dmitri O.,

Bezzubov Stanislav I.,

Siidra Oleg I.,

Borisov Artem S.,

Kalmykov Stepan N.

Publication year - 2020

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.202000168

Subject(s) - uranyl , thiourea , chemistry , orthorhombic crystal system , sulfuric acid , crystallography , aqueous solution , inorganic chemistry , crystal structure , sulfate , hydrogen bond , uranyl nitrate , molecule , ion , materials science , uranium , organic chemistry , metallurgy

Crystals of a new uranyl sulfate (C 2 N 4 H 8 S 2 )[UO 2 (SO 4 ) 2 ] · 0.3H 2 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 2 1 2 1 2 1 , a = 6.928(2) Å, b = 13.398(3) Å, c = 15.225(3) Å, Z = 2. Its crystal structure is comprised of [UO 2 (SO 4 ) 2 ] moieties linked by hydrogen bonds formed between the template cations and terminal oxygen atoms of the sulfate tetrahedra. The C 2 N 4 H 8 S 2 2+ template is most likely formed in situ during a redox reaction between uranyl cation and thiourea in a strongly acidic medium, with UO 2 2+ partially reduced to U 4+ .

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