Transition Metal Chemistry

, Volume 12, Issue 3, pp 254–256 | Cite as

Metal complexes of anxiolitic drugs. Crystal structure and electronic properties of dimeric oxalato complex of copper(II) bromazepam

  • Jose A. Real
  • Joaquin Borrás
  • Xavier Solans
  • Manual Font-Altaba
Full Papers


The title compound, has been prepared; its crystal structure, solved at room temperature, consists of dimer units bridged by oxalate lignads. Each copper ion is surrounded by two nitrogens of bromazepam and two oxygens of the oxalate ligand; a molecule of water occupies the apical site. The magnetic properties of the title compound have been investigated in the 30–300 K range. The molar magnetic susceptibility closely follows the behaviour expected for an antiferromagnetically coupled copper(II) binuclear complex with a singlet-triplet energy gap,J=−349 cm−1.


Copper Crystal Structure Catalysis Magnetic Property Oxalate 


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  1. (1).
    L. Antolini, L. Menabue, P. Prampolini and Saladini,J. Chem. Soc. Dalton Trans., 2109 (1982).Google Scholar
  2. (2).
    B. G. Malnstrom, in R. J. P. Williams and J. R. R. F. Da Silva (Eds.),New Trends in Bioinorganic Chemistry, Academic Press, London, 1980.Google Scholar
  3. (3).
    W. Muzurek, K. J. Berry, K. S. Murray, M. J. O'Connor, M. R. Snow and A. G. Wedd,Inorg. Chem.,21, 307 (1982).Google Scholar
  4. (4).
    M. Kato, K. Imai, Y. Muto, T. Kobil and H. B. Jonassen,J. Inorg. Nucl. Chem.,35, 109 (1973).Google Scholar
  5. (5).
    D. M. Dooley, R. A. Scott, J. Ellinghans., E. I. Solomons and H. B. Gray,Proc. Natl. Acad. Sci. USA,75, 3019 (1978).Google Scholar
  6. (6).
    E. Sinn and C. M. Harris,Coord. Chem. Rev.,4, 391 (1961).Google Scholar
  7. (7).
    O. Kahn,Angew. Chem. Int. Edit. Engl.,24, 834 (1985).Google Scholar
  8. (8).
    J. A. Real, J. Borrás, X. Solans and M. Font-Altaba,Transition Met. Chem., (in press).Google Scholar
  9. (9).
    P. Main, S. E. Fiske, S. L. Hull, L. Lessing, G. Germain J. P. Declerg and M. M. Woolfson., (1980),MULTAN, University of York (UK) and University of Louvain (Belgium).Google Scholar
  10. (10).
    G. M. Sheldrick, (1966)SHEIX. A computer program for crystal structure determination. Cambridge, England.Google Scholar
  11. (11).
    J. A. Real and J. Borrás,Synth. and React. Inorg. Met-Org. Chem. 14 843 (1984).Google Scholar
  12. (12).
    K. Nakamoto,Infrared and Raman Spectra of Inorganic and Coordination Compounds, 3rd Edit., Wiley, New York (1977).Google Scholar

Copyright information

© Chapman and Hall Ltd 1987

Authors and Affiliations

  • Jose A. Real
    • 1
  • Joaquin Borrás
    • 1
  • Xavier Solans
    • 2
  • Manual Font-Altaba
    • 2
  1. 1.Depto. Q. InorganicaFac. de Farmacia Univ. de ValenciaSpain
  2. 2.Depto. de CristalografíaUniv. de BarcelonaSpain

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