SYNTHESIS, IR-SPECTRUM, AND CRYSTAL-STRUCTURE OF SB12O18(OH)(2)CL-22-CENTER-DOT-2CH(2)CL(2)

The title compound has been prepared by the reaction of Sb5O7Cl11 with dichloromethane at 20 degrees C, forming colourless, moisture sensitive crystals. Sb12O18(OH)(2)Cl-22 . 2CH(2)Cl(2) crystallizes monoclinically in the space group P2(1)/n with two formula units per unit cell. Structure solution with 2696 unique observed reflections, R = 0.042. Lattice dimensions at 19 degrees C: a = 1350.2, b = 1466.7, c = 1392.9 pm, beta = 97.925 degrees. The distorted octahedrally coordinated antimony atoms, bridged by oxygen atoms, exhibit a molecular array which may be seen as a fragment of the rutile type structure, isolated by terminal chloride ligands. The solvate molecule is associated by a hydrogen bridge OH ... Cl.