Inter-channel effects in monosolvated atomic iodide cluster anion detachment: Correlation of the anisotropy parameter with solvent dipole moment

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Author list: Mbaiwa F, Dao D, Holtgrewe N, Lasinski J, Mabbs R

Publisher: American Institute of Physics

Place: MELVILLE

Publication year: 2012

Journal: The Journal of Chemical Physics (0021-9606)

Journal acronym: J CHEM PHYS

Volume number: 136

Issue number: 11

Number of pages: 6

ISSN: 0021-9606

eISSN: 1089-7690

Languages: English-Great Britain (EN-GB)

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Abstract

Photoelectron imaging results are presented for I- center dot X cluster anions (X = CO2, C4H5N [pyrrole], (CH3)(2)CO, CH3NO2). The available detachment channels are labeled according to the neutral iodine atom states produced (channel I equivalent to P-2(3/2) and channel II equivalent to P-2(1/2)). At photon energies in the vicinity of the channel II threshold these data are compared to previously reported results for I center dot X (X = CH3CN, CH3Cl, CH3Br, and H2O). In particular, these results show a strong connection between the dipole moment of the solvent molecule and the behavior of the channel I photoelectron angular distributions in this region, which is consistent with an electronic autodetachment process. The evolution of the channel II:channel I branching ratios in this excitation regime supports this contention. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3694244]

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