ChemInform Abstract: Amine, Imine, and Aminocarbene Complexes of Platinum(II).
Abstract
The chloro-bridged Pt dimer (I) readily reacts with the amines and imines L (II) to produce the N-bonded amine and imine complexes (III).
ChemInform Abstract
The chloro-bridged Pt dimer (I) readily reacts with the amines and imines L (II) to produce the N-bonded amine and imine complexes (III). (Yields only given for (IIIa) (L:NH2Ph) and (IIIb) (L:NHEt2), 85/27%). The reactions with the amines NHEt2 and NH2tBu lead to additional Pt-containing compounds resulting from ligand redistribution reactions. The primarily formed arylamine complexes (IIIa) react with phenylethyne (IV) over several days at ambient temp. to yield the aminocarbene complexes (V). Treatment of the imine complexes (IIIc) or any of other amine complexes with (IV), however, led only to decomposition. The analogous cyclic carbene complex (VII) is obtained from (I) and 2-amino-phenylethyne (VI). Treatment of the carbene complexes with tert. phosphines affords cationic bis(phosphine) derivatives such as (IX). Both the uncharged and cationic aminocarbene compounds are less reactive than their alkoxycarbene analogues (no further yields given).
