期刊
CHEMICAL PHYSICS LETTERS
卷 357, 期 1-2, 页码 85-90出版社
ELSEVIER
DOI: 10.1016/S0009-2614(02)00444-X
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By focusing a MIR femtosecond laser in a cell containing gas-phase metal carbonyls, the resonant infrared multiphoton dissociation of molecules was observed, Cr(CO)(6), Mo(Co)(6), W(CO)(6), and Fe(CO)(5), could easily be dissociated, which requires an excitation to at least v = 7 or 8 of the CO stretch vibration, After irradiation with similar to150 fs pulses at 5 mum the metal carbonyl practically disappears in favor of free CO, as detected by the IR spectrum. By comparing the power dependence of the total conversion with a model, we can infer that only few vibrational degrees of freedom are involved in the excitation process. (C) 2002 Published by Elsevier Science B.V.
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