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Journal of Structural Chemistry

2013 year, number 6


S. A. Gromilov1,2, S. P. Khranenko1, P. E. Plyusnin1,2, P. Yu. Vanina1,2, N. V. Kuratieva1,2
1A. V. Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, Novosibirsk
2Novosibirsk State University
Keywords: tungsten, rhodium, chrome, complex salt, crystal chemistry, single crystal X‑ray diffraction study, thermal properties


By single crystal X‑ray diffraction the crystal structure of a series of [М (NH3)5Cl]WO4 (М = Cr, Rh) complex salts is determined. The features of thermal expansion of the single crystal of [Cr(NH 3) 5Cl]WO 4 are studied by low- and high-temperature X‑ray diffractometry in the temperature range from –173°C to +127°C. It is shown that with an increase in the temperature, W–O distances and ∠O–W–O bond angles equalize and the average W–O distances decrease by 0.012 Å. The thermal properties of the salts in different gaseous atmospheres are examined and the phase composition of the obtained products is studied.