TITLE

Energy dependent photochemistry in the predissociation of V(OCO)+

AUTHOR(S)
Lessen, D. E.; Asher, R. L.; Brucat, P. J.
PUB. DATE
July 1991
SOURCE
Journal of Chemical Physics;7/15/1991, Vol. 95 Issue 2, p1414
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Photofragmentation of the V(OCO)+ molecular ion in the visible shows sharp resonant absorption features and two distinct dissociation pathways: V+(OCO)+→V++CO2 and V(OCO)+→VO++CO. The photodissociation excitation spectrum reveals two low frequency vibrational modes in the upper state of this molecule at 105 and 196 cm-1. This spectrum indicates that the same photoexcited state in V(OCO)+ is the precursor to both V+ and VO+ products. The branching ratio for VO+/V+ production depends on the excitation energy and upper state vibrational mode. An estimate of the barrier to the production of VO+ of 13 000 cm-1 (37 kcal/mole) above the ground state of V(OCO)+ is made from this data.
ACCESSION #
7639439

 

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