VALENCE-BAND PHOTOEMISSION AND NEAR-EDGE CORE EXCITATION SPECTROSCOPYOF DI-T-BUTYLCHLOROPHOSPHINE

The electronic structure of di-t-butylchlorophosphine [(t-butyl)(2)PCl ] has been studied by photoemission spectroscopy (PES) and inner-shell electronic spectroscopy. The photoemission spectrum of (t-butyl)(2)PC l exhibits features in good agreement with molecular orbital assignmen ts based on modified neglect of differential overlap semiempirical cal culations. The unoccupied electronic structure of (t-butyl)(2)PCl has been investigated through P 2p, P 2s, Cl 2p, and C 1s core excitation spectra recorded by dipole-regime inner shell electron energy loss spe ctroscopy (ISEELS). The P 2p and P 2s spectra of (t-butyl)(2)PCl exhib it features in common with PCl3 and P(CH3)(3), whereas the Cl 2p spect rum resembles that of PCl3 and the C 1s spectrum resembles P(CH3)(3) C omparison of the photoemission and the ISEELS results emphasizes the l ocal structural sensitivity of core excitation in contrast to the more extended picture of electronic structure provided by PES. (C) 1998 El sevier Science B.V. All rights reserved.