Transition Metal Chemistry

, Volume 8, Issue 4, pp 215–218 | Cite as

Spectroscopic and equilibrium studies of adduct formation between bis(2,4-pentadionato)oxovanadium(IV) and substituted pyridines

  • Ma José Macazaga
  • José A. García-Vázquez
  • Rosa Ma Medina
  • José R. Masaguer
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Summary

The behaviour of bis(2,4-pentadionato)oxovanadium(IV) as a Lewis acid toward a series of substituted pyridine bases has been investigated. The equilibrium constants of interaction were determined by a spectrophotometric method at 25 °C in 1,2-dichloroethane. The results have been interpreted on the basis of electronic and steric effects.

The visible spectra of the adducts in solution have also been determined and the gaussian analysis of these spectra show three bands. Molecular orbital theory has been used to rationalize the results.

Keywords

Physical Chemistry Inorganic Chemistry Pyridine Adduct Equilibrium Constant 
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.
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References

  1. (1).
    R. L. Carlin and F. A. Walker,J. Am. Chem. Soc., 87, 2128 (1965).Google Scholar
  2. (2).
    E, Kwiatkowski and J. Trojanowski,J. Inorg. Nucl. Chem., 38, 131 (1976).Google Scholar
  3. (3).
    J. J. R. Frausto da Silva and R. Woottom,Chem. Comm., 421 (1969).Google Scholar
  4. (4).
    C. J. Popp, J. H. Nelson and R. O. Ragsdale,J. Am. Chem. Soc., 91, 610 (1969).Google Scholar
  5. (5).
    N. S. Al-Niaimi, A. R. Al-Karaghowli, S. M. Aliwi and M. G. Jalhoon,J. Inorg. Nucl. Chem., 36, 283 (1974).Google Scholar
  6. (6).
    E. Kwiatkowski and J. Trojanowski,J. Inorg. Nucl. Chem., 37, 979 (1975).Google Scholar
  7. (7).
    E. K. Jaffe and A. P. Zipp,J. Inorg. Nucl. Chem., 40, 839 (1978).Google Scholar
  8. (8).
    R. Foster,Organic Charge Transfer Complexes, Academic Press, 1969.Google Scholar
  9. (9).
    W. B. Person,J. Am. Chem. Soc., 87, 167 (1965).Google Scholar
  10. (10).
    R. A. Rowe and M. M. Jones,Inorg. Syn., 5, 114 (1957).Google Scholar
  11. (11).
    D. D. Perrin, W. L. F. Armarego and D. R. Perrin,Purification of Laboratory Chemicals, Pergamon Press, pag. 131 (1969).Google Scholar
  12. (12).
    T. Nowicka-Jankowska,J. Inorg. Nucl. Chem., 33, 2043 (1971); Ch. Chilewski,Angew. Chem. Int. Edn. Engl., 10, 195 (1971).Google Scholar
  13. (13).
    J. S. Coleman, L. P. Varga and S. H. Martin,Inorg. Chem., 9, 1015 (1970).Google Scholar
  14. (14).
    J. R. Masaguer, A. Sousa-Alonso, J. Sueiras and J. A. GarcíaVázquez,An. Quím., 73, 384 (1977).Google Scholar
  15. (15).
    F. D. Rossini,Experimental Thermochemistry, Interscience Publishers, p. 235 (1956).Google Scholar
  16. (16).
    H. C. Brown, and M. J. S. Dewar,J. Chem. Soc., 2406 (1953).Google Scholar
  17. (17).
    D. D. Perrin,Dissociation Constants of Organic Bases in Aqueous Solutions, Butterworhts, London (1965).Google Scholar
  18. (18).
    R. G. Cavell, W. Byers and E. D. Day,Inorg. Chem., 10, 2710 (1971).Google Scholar
  19. (19).
    C. J. Ballhausen and H. B. Gray,Inorg. Chem., 1, 111 (1962).Google Scholar
  20. (20).
    M. H. Valek, W. A. Yeranos, G. Basu, P. K. Hon and R. L. Belford,J. Mol. Spect., 37, 228 (1971).Google Scholar
  21. (21).
    J. Selbin,Chem. Rev., 65, 153 (1965).Google Scholar
  22. (22).
    L. G. Vanquickenborne and S. P. McGlynn,Theor. Chim. Acta, 9, 390 (1968).Google Scholar
  23. (23).
    T. R. Ortolano, J. Selbin and S. P. McGlynn,J. Chem. Phys., 41, 262 (1964).Google Scholar
  24. (24).
    H. J. Stoklosa, J. R. Wasson,J. Inorg. Nucl. Chem., 38, 677 (1976).Google Scholar
  25. (25).
    N. Adachi, Y. Fukuda and K. Sone,Bull. Chem. Soc. Jpn., 50, 401 (1977) and refs. therein.Google Scholar
  26. (26).
    J. R. Wasson and H. J. Stoklosa,J. Inorg. Nucl. Chem., 227 (1974).Google Scholar

Copyright information

© Verlag Chemie GmbH 1983

Authors and Affiliations

  • Ma José Macazaga
    • 1
  • José A. García-Vázquez
    • 1
  • Rosa Ma Medina
    • 1
  • José R. Masaguer
    • 1
  1. 1.Departamento de Química Inorgánica, Facultad de CienciasUniversidad AutónomaMadrid-34Spain

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