Abstract A kinetic and mechanistic study of chloride substitution by thiourea nucleophiles, namely thiourea, N-methylthiourea, N, N-dimethylthiourea and N, N, N′, N′- tetramethylthiourea in the complexes chlorobis-(2-pyridylmethyl) amineplatinum (II)(Pt1), chloro N-(2-pyridinylmethyl)-8-quinolinamineplatinum (II)(Pt2), chloro N-(2- pyridinylmethylene)-8-quinolinamineplatinum (II)(Pt3) and chlorobis (8-quinolinyl) ...