Positively Charged Phosphorus as a Hydrogen Bond Acceptor

摘要: Phosphorus (P) is an element that essential to the life of all organisms, and atmospheric detection phosphine suggests existence a volatile biogeochemical P cycle. Here, we investigate ability participate in formation OH···P hydrogen bonds. Three bimolecular alcohol–trimethylphosphine complexes have been detected. Initially, were detected using matrix isolation spectroscopy, which favors complex formation. Subsequently, fundamental OH-stretching vibration was observed room-temperature gas-phase spectra. On basis our measured frequency red shifts quantum chemical calculations, find acceptor atom similar strength O S three P, O, atoms are weaker acceptors than N. The calculations show both H bond partial positive charges, as expected from their electronegativities. However, electrostatic potentials negative potential...