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Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 2 (February 2013)


metal-organic compounds



sj5295 scheme

Acta Cryst. (2013). E69, m125    [ doi:10.1107/S1600536813002274 ]

catena-Poly[[bis([mu]2-1,4,7,10,13,16-hexaoxacyclooctadecane)dipotassium]-[mu]2-iodido-(iodidocadmium)-di-[mu]2-iodido-(iodidocadmium)-[mu]2-iodido]

K. Rajarajan, A. Pugazhenthi and M. NizamMohideen

Abstract: The reaction of CdCl2, 18-crown-6 and KI in water yields the title coordination polymer, [{K(C12H24O6)}2Cd2I6]n. The potassium ion lies approximately in the plane of the crown ether, coordinated by all six crown ether O atoms and also by an iodide anion bound to a cadmium atom. A C atom of the crown ether is disordered over two positions with site occupancies of 0.77 (2) and 0.23 (2). Two K(18-crown-6)+ units are linked by inversion symmetry, forming a [bis([mu]2-18-crown-6)dipottasium] system with approximately square-planar K2O2 units. Inversion symmetry also generates the Cd2I6 fragment and the polymeric system is extended along the c axis by the formation of K-I-Cd bridges.

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