Three-fold intramolecular ring-closing metatheses involving square-planar platinum complexes with cis-phosphorus donor ligands: syntheses, structures, and properties of parachute-like complexes.
Reactions of the phosphite and phosphine complexes cis-PtCl 2((PX(CH2)mCH=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)3P) (6-40%). Crystal structures establish parachute-like motifs in which one X(CH2)(2 m+2)X bridge lies roughly in the platinum coordination plane, and the others lie above and below.
Skopek
Katrin
K
Institut für Organische Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen, Germany.
Barbasiewicz
Michał
M
Hampel
Frank
F
Gladysz
John A
JA