High‐resolution near‐infrared spectroscopy of water dimer

摘要: High‐resolution near‐infrared spectra are reported for all of the O–H stretch vibrational bands water dimer. The four vibrations characterized as essentially independent proton‐donor or proton‐acceptor motions. In addition to rotational and information contained in these spectra, details obtained concerning internal tunneling dynamics both ground excited states. These results show that motions which involve interchange proton donor acceptor molecules, associated frequencies decrease substantially due excitation. predissociation lifetimes various states dimer determined from linewidth measurements. clearly is strongly dependent on states, well Ka quantum number, indicating plays an important role determining dissociation rate this complex.