High-resolution gas-phase core-level X-ray photoelectron spectroscopy of PH3 and H2S with a synchrotron source: observations of vibrational structure on resolved spin—orbit core (2p) lines
✍ Scribed by Ronald G. Cavell; Kim H. Tan
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 375 KB
- Volume
- 197
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
High-resolution core-level photoelectron spectroscopy of PH, and HsS gave well-resolved spin-orbit components (A..,. PH, 860 meV, H$, 12 10 meV ). The v' = 1 vibrational components of PHs were clearly discemable (299 meV, 2411 cm-' ). The vibrationally excited component on the core (2~) photoelectron lines of PHI is weaker than that for SiH+ For PHs the v' = 1 band is 19% of the v' = 0 fundamental in the 2p photoelectron spectrum. For HsS the vibrational component was so weak it could not be reliably extracted. An approximate spectral moment analysis of PHp indicated a bond shortening of 0.08 A (versus an estimate of 0.17 A shortening for SiH,, which showed a much stronger vibrationally excited profile, by the same method). The lesser bond shortening on core ionization accounts for the reduced vibrational excitation in the spectrum of PH3.