Accession Number:

ADA094180

Title:

The Bonding in Some Bis(Arene)Chromium Compounds as Indicated by UV Photoelectron Spectroscopy.

Descriptive Note:

Technical rept.,

Corporate Author:

TEXAS UNIV AT AUSTIN DEPT OF CHEMISTRY

Report Date:

1980-12-22

Pagination or Media Count:

16.0

Abstract:

HeI ultraviolet photoelectron UV-PES spectra are reported for several bisarenechromium compounds. The arenes concerned are m-trifluoro-methylbenzotrifluoride, p-fluorobenzetrifluoride, p-difluorobenzene, m-dichlorobenzene, fluorobenzene, chlorobenzene, methylbenzoate, p-chlorotoluene, diphenyl ether, toluene, o-xylene, trimethylsilylbenzene, isobutylbenzene, 1,2,3-trimethylbenzene, 1,3,5-trimethylbenzene, and 1,2,4,5-tetremethylbenzene. The spectra have been interpreted using a qualitative perturbation molecular orbital model. The two major findings of the work are 1 the ionizations from the metal-localized a sub 1g and e sub 2g molecular orbitals are governed primarily by ligand electronegativity, but there is some evidence for the operation of conjugative effects, and 2 the ionization energies of the free and coordinated arenes are quite similar. Author

Subject Categories:

  • Organic Chemistry
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE