Three-Fold Intramolecular Ring-Closing Metatheses Involving Square-Planar Platinum Complexes with <i>cis</i>-Phosphorus Donor Ligands: Syntheses, Structures, and Properties of Parachute-like Complexes
作者:Katrin Skopek、Michał Barbasiewicz、Frank Hampel、John A. Gladysz
DOI:10.1021/ic702391m
日期:2008.5.1
Reactions of the phosphite and phosphine complexes cis-PtCl2((PX(CH2)(m)CH=CH2)(3))(2) (X/m = O/3, O/4, O/5, -/5, -/6) with Grubbs' catalyst, followed by hydrogenations, yield cis-PtCl2(P(X(CH2)(2m+2)X)(3)P) (6-40%). Crystal structures establish parachute-like motifs in which one X(CH2)(2m+2)X bridge lies roughly in the platinum coordination plane, and the others lie above and below.