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The electronic structure of the valence bands of solid NH3and H2O studied by ultraviolet photoelectron spectroscopy

Authors
Journal
Journal of Electron Spectroscopy and Related Phenomena
0368-2048
Publisher
Elsevier
Publication Date
Volume
15
Issue
1
Identifiers
DOI: 10.1016/0368-2048(79)87016-4
Disciplines
  • Mathematics
  • Physics

Abstract

Abstract The results of a photoelectron study using ultraviolet 40.81 eV photons (UPS) of the outermost bands of the molecular solids NH 3 and H 2O are reported. The binding energies, the energy separation, the band widths and the branching ratio of the two outermost bands of solid NH 3 are found not to be significantly different from the 3a l and 1e molecular orbital states of the gaseous NH 3 UPS spectrum. This implies that hydrogen bonding has not produced any significant change in the electronic structure of the valence bands of solid NH 3. Because of a much smaller intermolecular hydrogen bond length in solid H 2O compared to that in solid NH 3, the hydrogen bond does, however, produce a significant change in the valence bands of H 2O on solidification, and because of the orbital geometry it predominantly affects the 3a l molecular orbital state.

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