Vibrational Predissociation of the HCl–(H2O)3 Tetramer
| Autor: | Hanna Reisler, Kristen Zuraski, Amit K. Samanta, Daniel Kwasniewski |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Range (particle radiation)
Work (thermodynamics) 010304 chemical physics Internal energy Chemistry Analytical chemistry 010402 general chemistry Mass spectrometry 01 natural sciences Bond-dissociation energy 0104 chemical sciences Tetramer Ionization 0103 physical sciences General Materials Science Physical and Theoretical Chemistry Excitation |
| Zdroj: | The Journal of Physical Chemistry Letters. 7:4243-4247 |
| ISSN: | 1948-7185 |
| DOI: | 10.1021/acs.jpclett.6b01848 |
| Popis: | The vibrational predissociation of the HCl–(H2O)3 tetramer, the largest HCl–(H2O)n cluster for which HCl is not predicted to be ionized, is reported. This work focuses on the predissociation pathway giving rise to H2O + HCl–(H2O)2 following IR laser excitation of the H-bonded OH stretch fundamental. H2O fragments are monitored state selectively by 2 + 1 resonance-enhanced multiphoton ionization (REMPI) combined with time-of-flight mass spectrometry (TOF-MS). Velocity map images of H2O in selected rotational levels are used to determine translational energy distributions from which the internal energy distributions in the pair-correlated cofragments are derived. From the maximum translational energy release, the bond dissociation energy, D0 = 2400 ± 100 cm–1, is determined for the investigated channel. The energy distributions in the fragments are broad, encompassing the entire range of allowed states. The importance of cooperative (nonpairwise) interactions is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|