Spectroscopic Properties of the Diatomic Oxides of the Transition Elements

  • R. F. Barrow


The gaseous monoxides of the transition metals present interesting problems in a number of related fields. The group contains some of the most stable diatomic molecules known, so that they are often of importance at high temperatures, and it is indeed through mass-spectrometric studies of high temperature equilibria that their energies of dissociation have most commonly been measured. Their stability and open-shell electron configurations lead to the appearance of allowed electronic transitions in the visible region of the spectrum and some of these are observed in the spectra of not too hot stars. The electronic states involved are often of high multiplicity, and analyses of the transitions offer challenges to conventional high resolution spectroscopy, while the states themselves pose theoretical problems in the formulation of their energy levels. The lighter members ScO, TiO, VO are yet sufficiently simple for ab initio calculations of their electronic structures to be made. Important results have recently followed studies in matrix-isolation spectroscopy, and this technique has supplemented information from gas-phase spectroscopy about nuclear magnetic hyperfine structure which proves to be important in the ground states of some of these molecules.


Electron Spin Resonance Electron Spin Resonance Spectrum Transition Metal Oxide Hyperfine Structure Internuclear Distance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Cheetham, C. J., and Barrow, R. F., Adv. High Temp. Chem., 1967, 1, 7.Google Scholar
  2. 2.
    Carlson, K. D., and Claydon, G. R., Adv. High Temp. Chem., 1967, 1, 43.Google Scholar
  3. 3.
    Grimley, R. T., ‘The Characterization of High Temperature Vapors’, ed. J. L. Margrave, Wiley, New York, 1967, p. 195.Google Scholar
  4. 4.
    Callear, A. B., and Norrish, R. G. W., Proc. Roy. Soc., 1960, A259, 304.Google Scholar
  5. 5.
    Weltner, W., McLeod, D., and Kasai, P. H., J. Chem. Phys., 1967, 46, 3172.CrossRefGoogle Scholar
  6. 6.
    Smith, J. J., and Meyer, B., J. Mol. Spectroscopy, 1968, 27, 304.CrossRefGoogle Scholar
  7. 7.
    Kasai, P. H., J. Chem. Phys., 1968, 49, 4979.CrossRefGoogle Scholar
  8. 8.
    Ames, L. L., Walsh, P. N., and White, D., J. Phys. Chem., 1967, 71, 2708.Google Scholar
  9. 9.
    Smoes, S., Goppens, P., Bergman, C., and Drowart, J., Trans. Faraday Soc., 1969, 65, 682.CrossRefGoogle Scholar
  10. 10.
    Richards, D., and Barrow, R. F., Nature, 1968, 217, 842;CrossRefGoogle Scholar
  11. 10a.
    Richards, D., and Barrow, R. F., Nature, 1968, 219, 1244.CrossRefGoogle Scholar
  12. 11.
    Dunn, T. M., 1969, personal communication.Google Scholar
  13. 12.
    Barrow, R. F., and Senior, M., Nature, 1969, 223, 1359.CrossRefGoogle Scholar
  14. 13.
    Berg, R. A., Wharton, L., Klemperer, W., Büchler, A., and Stauffer, J. L., J. Chem. Phys., 1965, 43, 2416.Google Scholar
  15. 14.
    Frosch, R. A., and Foley, H. M., Phys. Rev., 1952, 88, 1337.CrossRefGoogle Scholar
  16. 15.
    Radford, H. E., Phys. Rev., 1964, 136, 1571A.CrossRefGoogle Scholar
  17. 16.
    Atkins, P. W., Proc. Roy. Soc., 1967, A300, 487.Google Scholar
  18. 17.
    See for example, Kuhn, H. G., ‘Atomic Spectra’, 2nd edn., Longmans, London, 1969.Google Scholar
  19. 18.
    Adams, A., Klemperer, W., and Dunn, T. M., Canad. J. Phys., 1968, 46, 2213.Google Scholar
  20. 19.
    Dunn, T. M., and Rao, K. M., Nature, 1969, 222, 266.CrossRefGoogle Scholar

Copyright information

© A. J. Downs, D. A. Long, L. A. K. Staveley 1971

Authors and Affiliations

  • R. F. Barrow

There are no affiliations available

Personalised recommendations