Journal of Electron Spectroscopy and Related Phenomena 94 (1998) 187-194
Valence band photoemission and near-edge core excitation spectroscopy of di-t-butylchlorophosphine
C.W. Hutchingsa, A. P. Hitchcockb, *, A. T. Wenb, S.-D. Hwanga, J.A. Glassc, J.T. Spencerc,
Y.-F. Hud , G.M. Bancroftd, P.A. Dowbena,c
aDept of Physics and Astronomy and Center for Materials Research and Analysis, University of Nebraska, Lincoln, NE 68588-0111, USA
bDept of Chemistry, McMaster, University, Hamilton, L8S 4MI, Canada
eDeptt of Chemistry and the W.M. Keck Center for Molecular Electronics, Syracuse University Syracuse, NY 13244. USA
dDepartment of Chemistry, University of Western Ontario, London, N6A 3K7, Canada
Received 1 December 1997; accepted 27 January 1998
The electronic structure of di-t-butylchlorophosphine [(t-butyl)2PCI] has been studied by photoemission spectroscopy (PES) and inner-shell electronic spectroscopy. The photoemission spectrum of (t-butyl)2PCI exhibits features in good agreement with molecular orbital assignments based on modified neglect of differential overlap semiempirical calculations. The unoccupied electronic structure of (t-butyl) 2PCI has been investigated through P 2p, P 2s, Cl 2p, and C ls core excitation spectra recorded by dipole-regime inner shell electron energy loss spectroscopy (ISEELS). The P 2p and P 2s spectra of (t-butyl)2PCI exhibit features in common with PC13 and P(CH3)3, whereas the Cl 2p spectrum resembles that Of PC13 and the C ls spectrum resembles P(CH3)3. Comparison of the photoemission and the ISEELS results emphasizes the local structural sensitivity of core excitation in contrast to the more extended picture of electronic structure provided by PES.

Keywords: Core excitation; Photoemission; Di-t-butylchlorophosphine; Organometallic CVD
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