Five-coordinate hydrido / olefin platinum(II) complexes

Stable five-coordinate hydrido / olefin complexes of general formula [Pt(2,9-Me 2 -1,10-phenanthroline)H(Cl)(olefin)] have been synthesized in high yield through oxidative addition of HCl to [Pt(2,9-Me 2 -1,10-phenanthroline)(olefin)] precursors. Relevant spectroscopic features and some preliminary results concerning the reactivity of the new compounds are also reported.