title: Tetra(chlorido/iodido)(1,10-phenanthroline)platinum(IV) hemi[di(chlorine/iodine)].
abstract: The asymmetric unit of the title compound, [PtCl(3.66)I(0.34)(C(12)H(8)N(2))]·0.5(Cl(0.13)I(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 octa-hedral 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 [PtCl(4)(C(12)H(8)N(2))]·0.5I(2). In the analysed crystal, two Cl atoms are partially (ca 25% and 9%) replaced by I atoms, and the I(2) mol-ecule 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 inter-molecular π-π inter-actions between the six-membered rings, with a centroid-centroid distance of 3.771 (4) Å. There are also weak intra-molecular C-H⋯Cl hydrogen bonds.
authors.affiliation: School of Applied Chemical Engineering, The Research Institute of Catalysis, Chonnam National University, Gwangju 500-757, Republic of Korea.
authors.forename: Nam-Ho
authors.initials: NH
authors.lastname: Kim
authors.forename: Kwang
authors.initials: K
authors.lastname: Ha