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Synthesis and solid-state structural characterisation of Pt(II,IV) bromide complexes containing bidentate organothiomethylpyridine heteroleptic ligands

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Jones, Roderick C, Skelton, BW, Tolhurst, V, White, AH, Wilson, AJ and Canty, AJ 2007 , 'Synthesis and solid-state structural characterisation of Pt(II,IV) bromide complexes containing bidentate organothiomethylpyridine heteroleptic ligands' , Polyhedron, vol. 26, No. 3 , pp. 708-718 , doi: 10.1016/j.poly.2006.09.001.

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Abstract

A convenient synthetic method for the preparation of organothiomethylpyridine ligands 2-(RSCH2)C5H4N (R = Ph (L1), Me (L2)), 2-MeS–6-Me-C5H3N (L3), and 2-MeS–4-Me-C5H3N (L4) via the initial lithiation of substituted 2-picolines followed by the nucleophilic reaction with a diorganyldisulfide is described. The complexes [PtBr2L] (L = L1–L4) have been prepared in good to high yields as yellow solids with low solubility in organic solvents. The solid state structures of the complexes have been determined, showing the spatial arrangement of the complexes to depend significantly upon varying substituents within the ligand. The complexes undergo oxidation by bromine to form the tetravalent complexes [PtBr4(L)] (L = L1–L4). The solid state structures of [PtBr4(L2)] and [PtBr4(L4)] have been determined, and shown to be monomeric with the ligand chelating the platinum centre.

Item Type: Article
Authors/Creators:Jones, Roderick C and Skelton, BW and Tolhurst, V and White, AH and Wilson, AJ and Canty, AJ
Keywords: Platinum; Mixed donor ligands; Pyridine; Thioether; X-ray crystal structures
Journal or Publication Title: Polyhedron
ISSN: 0277-5387
DOI / ID Number: 10.1016/j.poly.2006.09.001
Additional Information:

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