| Abstract
| - The complexes cis-PtCl2((PX(CH2)mCHCH2)3)2 (X/m = O/3, O/4, O/5, -/5, -/6) undergo three-fold intramolecular ring-closing metatheses; subsequent hydrogenations afford cis-PtCl2(P(X(CH2)2m+2X)3P) in 6-40% overall yields. Crystal structures establish parachute-like motifs in which one chain bridging the phosphorus donor atoms lies roughly in the platinum coordination plane and the others lie above and below.
- Reactions of the phosphite and phosphine complexes cis-PtCl2((PX(CH2)mCHCH2)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+2X)3P) (6-40%). Crystal structures establish parachute-like motifs in which one X(CH2)2m+2X bridge lies roughly in the platinum coordination plane, and the others lie above and below.
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