Probing Regioselective Intermolecular Hydrogen Bonding to [Re(CO)H2(NO)(PR3)2] Complexes by NMR Titration and Equilibrium NMR Methodologies

Abstract

The interaction of acidic alcohols with the title compound is tuned by the ligand framework of the transition metal complex (see picture). The phosphorus donor dictates the site of attack, whereas the ligand trans to the hydride determines the strength of the dihydrogen bond.