(IUCr) Crystallography Journals Online

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Acta Cryst. (2005). E61, m293-m295 [ doi:10.1107/S1600536805000085 ]

(18-Crown-6)potassium chlorochromate

S. A. Kotlyar, R. I. Zubatyuk, O. V. Shishkin, G. N. Chuprin, A. V. Kiriyak and G. L. Kamalov

Abstract: The crystal structure of the title compound, (1,4,7,10,13,16-hexaoxacyclooctadecane- [kappa] ⁶O)potassium chlorochromate(VI), [K(C₁₂H₂₄O₆)][CrClO₃], contains a K⁺ cation, complexed with one crown ether molecule, and a chlorochromate anion. The cation is located within the mean plane of the ether O atoms, approximately in the centre of the macrocyclic cavity, and bonded to them with K-O distances in the range 2.785 (5)-2.836 (5) Å. In the crystal structure, polymeric chains of the type K⁺-CrO ${}_{3}^{\,- }$ -K⁺ are formed.

Online 15 January 2005