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Observation of resonance effects in the relative partial photoionization cross sections of the d bands of M(CO)6, M = Cr, Mo and W

✍ Scribed by Glyn Cooper; Jennifer C. Green; Martin P. Payne; Barry R. Dobson; Ian H. Hillier

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 330 KB
Volume: 125
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(86)85083-7

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✦ Synopsis

Relative partial photoionization cross sections as a function of photon energy, over the range 20-110 eV, have been measured for the valence bands of Cr(CO),, Mo(CO), and W(CO),. All three tlg -' bands show a very pronounced increase in intensity at photon energies (hv) corresponding to np resonant absorption (Cr(CO),, hv = 52.5 eV, n = 3; Mo(CO),,;,hv = 48 eV, n = 4; W(CO),, hv = 44 and 53 eV, n = 5). The other valence bands show a small intensity increase at similar energies. Observation of such resonant photoemission provides an unambiguous method for assignment of nd bands in the photoelectron spectra of gas-phase molecules.

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