Acta Cryst. (2009). E65, m379  [ doi:10.1107/S1600536809007703 ]

Tetra(chlorido/iodido)(1,10-phenanthroline)platinum(IV) hemi[di(chlorine/iodine)]

N.-H. Kim and K. Ha

Abstract: The asymmetric unit of the title compound, [PtCl_3.66I_0.34(C₁₂H₈N₂)]·0.5(Cl_0.13I_1.87), contains a neutral Pt^IV complex and one half of a halogen molecule. The Pt^IV ion is six-coordinated in a distorted octahedral environment by two N atoms of the 1,10-phenanthroline ligand and Cl or I atoms. The refinement of the structure and the EDX analysis indicate that the compound is a solid solution in which there is some substitution of Cl for I and vice versa. The chemical formula of the pure state of the compound would have been [PtCl₄(C₁₂H₈N₂)]·0.5I₂. In the analysed crystal, two Cl atoms are partially (ca 25% and 9%) replaced by I atoms, and the I₂ molecule has a minor component modelled as ICl. As a result of the disorder, the different trans effects of the N and Cl/I atoms are not distinct. The complex displays intermolecular - interactions between the six-membered rings, with a centroid-centroid distance of 3.771 (4) Å. There are also weak intramolecular C-HCl hydrogen bonds.

Online 11 March 2009

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