The infrared photodissociation spectra of Fen(CH3OH)m complexes and their deuterated analogs near 10μ

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Abstract
The infrared photodissociation spectra of Fen(CH3OH)m, Fen(CH3OD)m, Fen(CD3OH)m, and Fen(CD3OD)m (n=5–15; m=1,2) have been recorded from 920–1090 cm−1. Analysis of the spectral features indicates that in all cases, molecularly adsorbed methanol is the absorbing chromophore, with no evidence of methoxy formation. The observed frequencies for the C–O stretching vibration and other vibrational modes are shifted ∼40 cm−1 to the red of the corresponding fundamentals of gas-phase methanol. The spectral shifts and thus the magnitude of the cluster–methanol interaction are observed to be independent of iron cluster size over the size range studied, implying an insensitivity of the interaction to the underlying cluster structure.