Five- and six-membered platinacycles derived from phenantryl and anthracenyl imines
作者:Margarita Crespo、Emilia Evangelio
DOI:10.1016/j.jorganchem.2004.03.020
日期:2004.6
The reaction of [Pt2Me4(mu-SMe2)(2)] with ligands Me2NCH2CH2NCHAr (2a, Ar = 9-phenantryl; 2b, Ar = 9-anthracenyl) carried out in acetone at room temperature produced the corresponding Compounds [PtMe29-(Me2NCH2CH2NCH)C14H9}] (3) in which the imines act as bidentate [N,N'] ligands. Refluxing toluene solutions of compounds 3 gave cyclometallated [C,N,N] compounds [PtMe9-(Me2NCH2CH2NCH)C14H8}] (4) as a mixture of two isomers containing either a five- or a six-membered metallacycles for 3a and as a single isomer containing a six-membered metallacycle for 3b. The reactions of compounds 4 with acetyl chloride and with methyl iodide produced. respectively, compounds [PtCl9-(Me2NCH2CH2NCH)C14H8}] (5) and [PtMe2I9-(Me2NCH2CH2NCH)C14H8}] (6). All compounds were characterised by NMR spectroscopies and analytical data. (C) 2004 Elsevier B.V. All rights reserved.