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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. Hutchings^a, A. P. Hitchcock^b,*, A. T. Wen^b, S.-D. Hwang^a, J.A. Glass^c, J.T. Spencer^c, Y.-F. Hu^d, G.M. Bancroft^d, P.A. Dowben^a,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
Abstract
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.