Reversible insertion of carbon dioxide into Pt(ii)–hydroxo bonds

Abstract

The reactivity of three monomeric diimine Pt(II) hydroxo complexes, (NN)Pt(OH)R (NN = bulky diimine ligand; R = OH, 1-OH; R = C₆H₅, 1-Ph; R = CH₃, 1-Me) towards carbon dioxide has been investigated. Insertion into the Pt–OH bonds was found to be facile and reversible at low temperature for all compounds; the reaction with bis-hydroxide 1-OH gives an isolable κ²-carbonato compound 2, with elimination of water.