Evidence of the unprecedented conversion of intermolecular proton to water bridging of two phosphoryl ruthenium complexes

We evidenced the conversion of an unprecedented intermolecular bridged-proton bimetallic P-metallated phosphoryl complex [{[Ru](Ph2P=O)}(2)H][PF6](3) to its corresponding H-bonded water complex [{[Ru](Ph2P=O)}(2)(H2O)][PF6](2), a rare motif. Their synthesis, NMR data, X-ray crystal structures, electrochemical and photophysical properties are reported.