The use of photoelectron angular distributions to provide structural details of cluster environments is investigated. Photoelectron spectra and angular distributions of I-·(H2O)2 and I-·(CH3CN)2 cluster anions are recorded over a range of photon energies. The anisotropy parameter (innodatabeta) for electrons undergoes a sharp change (Δβmax) at photon energies close to a detachment channel threshold. I-·(H2O)2 results show the relationship between dipole moment and Δβmax to be similar to that observed in monosolvated I- detachment. The Δβmax of the 4.0 eV band in the I-·(CH3CN)2 photoelectron spectrum suggests a dipole moment of 5-6 D. This is consistent with predictions of a hydrogen bonded conformer of the I-· (CH3CN)2 cluster anion [Timerghazin, Q. K.; Nguyen, T. N.; Peslherbe, G. H. J. Chem. Phys. 2002, 116, 6867-6870]. (Chemical Equation Presented).
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry