Vibrational predissociation of the phenol-water dimer: a view from the water.

The vibrational predissociation (VP) dynamics of the phenol-water (PhOH-HO) dimer were studied by detecting HO fragments and using velocity map imaging (VMI) to infer the internal energy distributions of PhOH cofragments, pair-correlated with selected rotational levels of the HO fragments. Following infrared (IR) laser excitation of the hydrogen-bonded OH stretch fundamental of PhOH (Pathway 1) or the asymmetric OH stretch localized on HO (Pathway 2), dissociation to HO + PhOH was observed. HO fragments were monitored state-selectively by using 2+1 Resonance-Enhanced Multiphoton Ionization (REMPI) combined with time-of-flight mass spectrometry (TOF-MS).

Predissociation dynamics of the HCl-(HO) tetramer: An experimental and theoretical investigation.

The cyclic HCl-(HO) tetramer is the largest observed neutral HCl-(HO) cluster. The vibrational predissociation of HCl-(HO) is investigated by theory, quasiclassical trajectory (QCT) calculations, and experiment, following the infrared excitation of the hydrogen-bonded OH-stretch fundamental. The energetically possible dissociation pathways are HCl + (HO) (Pathway 1) and HO + HCl-(HO) (Pathway 2).

Vibrational Predissociation of the HCl-(HO) Tetramer.

The vibrational predissociation of the HCl-(HO) tetramer, the largest HCl-(HO) cluster for which HCl is not predicted to be ionized, is reported. This work focuses on the predissociation pathway giving rise to HO + HCl-(HO) following IR laser excitation of the H-bonded OH stretch fundamental. HO fragments are monitored state selectively by 2 + 1 resonance-enhanced multiphoton ionization (REMPI) combined with time-of-flight mass spectrometry (TOF-MS).