Oxidative addition of methyl iodide to dimethylplatinum (II) compounds containing bulky and/or chiral ligands. Crystal structure of compound [PtMe3I{1-(Me2NCH2 CH2NCH)C10H7}]
摘要:
Compound [PtMe2{1-(Me2NCH2CH2NCH)C-10 H-7}] (2a) gave upon reaction with methyl iodide platinum (IV) compound [PtMe3I{1-(Me2NCH2CH2NCH)C10H7}] (3a) as a single isomer which was characterised structurally. Upon standing in solution, two isomers of 3a were detected by H-1 NMR. New chiral compounds [PtMe2(N,N'-chelate)] (N,N' = 2-((S)-CHNCH(Me)C6H5)C9H6N (2b), 2-((R)-CHNCH(Me)C10H7)C5H4N (2c) and 2-((R)-CHNCH(Me)C10H7)C9H6N (2d)) were obtained from [Pt2Me4(mu-SMe2)(2)] and the corresponding diimines. The oxidative addition of methyl iodide to compounds 2b-2d gave two diastereomers each of compounds [PtMe3I(N,N'-chelate)] in nearly equal amounts. All new platinum (II) and platinum (IV) compounds were fully characterised. (C) 2003 Elsevier Ltd. All rights reserved.