Synthesis and structure of R 2[UO2(NO3)2(NCS)2] (R = Rb or Cs)

Autor:	Eugenia V. Peresypkina, Victor N. Serezhkin, V. A. Grigor’eva, Larisa B. Serezhkina, A. V. Virovets
Rok vydání:	2015
Předmět:	Coordination sphere Inorganic chemistry Infrared spectroscopy General Chemistry Condensed Matter Physics Uranyl Alkali metal Ion chemistry.chemical_compound Crystallography chemistry X-ray crystallography General Materials Science Orthorhombic crystal system Monoclinic crystal system
Zdroj:	Crystallography Reports. 60:46-51
ISSN:	1562-689X 1063-7745
Popis:	Crystals Rb2[UO2(NO3)2(NCS)2] (I) and Cs2[UO2(NO3)2(NCS)2] (II) have been synthesized and studied by IR spectroscopy and X-ray diffraction. Crystals I are monoclinic, with the following parameters: a = 12.2118(5) A, b = 10.2545(3) A, c = 11.8754(4) A, β = 110.287(1)°, sp. gr. C2/c, Z = 4, and R = 0.0523. Crystals II are orthorhombic, with a = 13.7309(3) A, b = 10.5749(2) A, c = 10.1891(2) A, sp. gr. Pnma, Z = 4, and R = 0.0411. The basic structural units of crystals I and II are one-core complexes [UO2(NO3)2(NCS)2]2−, which belong to the crystallochemical group cis-AB201M21 (A = UO22+, B01 = NO3−, M1 = NCS−), which are combined into a framework via electrostatic interactions with ions of alkaline metals R (R = Rb or Cs). The structural features of crystals I and II, which condition the formation of [UO2(NO3)2(NCS)2]2− complexes with a cis rather than a trans position of isothiocyanate ions in the coordination sphere of uranyl ions, are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f44261d3ce193cf8079553d98af9216 https://doi.org/10.1134/s1063774515010204 Zobrazit plný text záznamu Plný text ve formátu PDF