Symbiotic reactions between five- and six-membered hypervalent spirobicyclic phosphoranes and transition metal carbonylates

Abstract

The nucleophilic substitution reactions of five- and six-membered hypervalent phosphorus containing spirobicyclic phosphoranes with metal carbonylates of high nucleophilic character result in the isolation of the corresponding metallated phosphoranes. The presence of five- and six-membered rings in their structures inhibits the ionising of these compounds into their phosphonium cations in solutions. These have been characterised by elemental analysis, molar conductance and spectroscopic (mass and ¹H NMR) and TG studies.