作者:José Vicente、Aurelia Arcas、Jesús M. Fernández-Hernández、Gabriel Aullón、Delia Bautista
DOI:10.1021/om700665n
日期:2007.12.1
Me4N[PtCH2C(O)Me}Cl-2(eta(2)-C2H4)] (1), reacts either (1) with neutral ligands to afford cis-Me4N[PtCH2C(O)Me}Cl-2(L)] (L = CO (2), eta(2)-PhCH=CH2 (3), eta(2)-PhC CPh (4), eta(2)-H2C=C=CMe2 (5), PPh3 (6), AsPh3 (7)), trans- or/and cis- [PtCH2C(O)Me}ClL2] (L = PPh3 (8), AsPh3 (9), tht (10), XyNC (11), 'BuNC (12), py (17)), [PtCH2C(O)Me}Cl(eta(2)-C2H4)(L)] (L = py (16)), or cis-[PtCH2C(O)Me}-ClL2] (L-2 = norbornadiene (nbd, 18), 1,5-cyclooctadiene (cod, 19), bis(diphenylphosphino)methane (dppm, 20), 4,4'-di-tert-butyl-2,2'-bipyridyl (dbbpy, 21)) or (2) with [Tl(acac)] to give [PtCH2C(O)Me}(O,O-acac)(eta(2)-C2H4)] (22) which reacts with neutral ligands to give [PtCH2C(O)Me}(O,O-acac)(L)] (L = CO (23), PPh3 (24), XyNC (25)). The different behavior of py and stronger :pi-acceptor ligands, as CO and PR3 toward 1, has been explained through a DFT study. Reaction of 11trans with 2 equiv of XyNC affords a mixture of trans-[PtC(O)NHXy}Cl(CNXy)(2)] (13) and trans-[PtC(NHXy)(2)}Cl(CNXy)(2)]Cl (14). The first was isolated by recrystallization and the latter by reacting cis-[PtCl2(CNXy)(2)] with 2 equiv of XyNC. However, cis-[PtCH2C(O)Me}(2)(bpy)] reacts with 4 equiv of XyNC to give cis-[PtCH2C(O)Me}(2)(CNXy)(2)] (15).