Journal of Structural Chemistry

, Volume 46, Issue 6, pp 991–997 | Cite as

Molecular structure of SmBr3 and DyBr3 according to the data of simultaneous electron diffraction and mass spectrometric experiment

  • N. I. Giricheva
  • S. A. Shlykov
  • E. V. Chernova
  • Yu. S. Levina
  • A. V. Krasnov


The saturated vapors of samarium and dysprosium tribromides were investigated for the first time by electron diffraction with mass spectrometric monitoring at temperatures of 1151(10) K and 1141(10) K. Dimer molecules (up to 2 mole %) were found in vapors along with monomer molecules. The SmBr3 and DyBr3 molecules have a pyramidal effective configuration with bond angles ∠gBr-Sm-Br=115.1(9)° and ∠gBr-Dy-Br=115.3(7)°. The difference between the internuclear distances of SmBr3 and DyBr3 (r g(Sm-Br) = 2.653(6) Å and r g(Dy-Br) = 2.609(5) Å) coincides with the difference between the ionic radii of Sm3+ and Dy3+. The insignificant pyramidality of the r g configuration and the low deformation vibration frequencies of SmBr3 and DyBr3 may be indicative of a planar equilibrium geometry of D 3h symmetry. The equilibrium distances r e(Sm-Br) and r e(Dy-Br) have been evaluated and compared with the values obtained by quantum chemical calculations.


gas-phase electron diffraction mass spectrometry samarium tribromide dysprosium tribromide molecular structure vibration frequencies 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    N. I. Giricheva, G. V. Girichev, A. V. Krasnov, et al., Zh. Strukt. Khim., 45, No. 1, 53–61 (2004).Google Scholar
  2. 2.
    A. Z. Zakharov, N. Vogt, S. A. Shlykov, et al., J. Mol. Struct., 707, 147–152 (2004).CrossRefGoogle Scholar
  3. 3.
    A. V. Zakharov, N. I. Giricheva, N. Vogt, et al., J. Chem. Soc., Dalton Trans., 3160–3162 (2001).Google Scholar
  4. 4.
    T. G. Danilova, G. V. Girichev, N. I. Giricheva, et al., Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 20, No. 8, 1233/1234 (1977).Google Scholar
  5. 5.
    N. I. Giricheva, E. Z. Zasorin, G. V. Girichev, et al., ibid., No. 2, 284/285.Google Scholar
  6. 6.
    N. I. Giricheva, E. Z. Zasorin, G. V. Girichev, et al., ibid., 17, No. 4, 616–618 (1974).Google Scholar
  7. 7.
    G. V. Girichev, S. A. Shlykov, and Yu. F. Revichev, Prib. Tekh. Eksp., 4, 167–169 (1986).Google Scholar
  8. 8.
    T. R. Cubdari, S. O. Sommerer, L. A. Strohecker, and L. Tippett, J. Chem. Phys., 103, No. 16, 7058–7063 (1995).CrossRefGoogle Scholar
  9. 9.
    P. C. Groen, to be published.Google Scholar
  10. 10.
    M. Hargittai, Chem. Rev., 100, 2233–2302 (2000).CrossRefGoogle Scholar
  11. 11.
    A. Kovács, J. Mol. Struct., 482/483, 403–407 (1999).CrossRefGoogle Scholar
  12. 12.
    A. Kovács, Chem. Phys. Lett., 319, 238–246 (2000).CrossRefGoogle Scholar
  13. 13.
    A. Feltrin and S. N. Cesaro, High Temp. Mater. Sci., 35, 203–214 (1996).Google Scholar
  14. 14.
    E. G. Girichev, A. V. Zakharov, G. V. Girichev, and M. I. Bazanov, Izv. Vyssh. Uchebn. Zaved., Tekhnol. Tekstiln. Prom., No. 2, 142–146 (2000).Google Scholar
  15. 15.
    R. A. Bonham and L. Schaefer, International Tables for X-ray Crystallography, Sect. 25, Kynoch Press, Birmingham (1974).Google Scholar
  16. 16.
    N. I. Giricheva, O. G. Krasnova, and G. V. Girichev, Zh. Strukt. Khim., 39, 239–246 (1998).Google Scholar
  17. 17.
    B. Andersen, H. M. Seip, T. G. Strand, and R. Stolevik, Acta Chem. Scand., 23, 3224–3234 (1969).CrossRefGoogle Scholar
  18. 18.
    W. C. Martin, R. Zalubas, and L. Hagan, Atomic Energy Levels — The Rare-Earth Elements, NSRDS-NBS60, US Government Printing Office, Washington (1978).Google Scholar
  19. 19.
    J. T. Waber and D. T. Cromer, J. Chem. Phys., 42, 4116–4123 (1965).CrossRefGoogle Scholar
  20. 20.
    A. Kovács and R. J. M. Konings, Chem. Phys. Lett., 268, 207–212 (1997).CrossRefGoogle Scholar
  21. 21.
    L. S. Bartell, J. Chem. Phys., 38, 1827–1833 (1963).CrossRefGoogle Scholar
  22. 22.
    V. A. Sipachev, J. Mol. Struct. (Theochem), 121, 143–151 (1985).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • N. I. Giricheva
    • 1
  • S. A. Shlykov
    • 2
  • E. V. Chernova
    • 1
  • Yu. S. Levina
    • 1
  • A. V. Krasnov
    • 2
  1. 1.Ivanovo
  2. 2.Ivanovo Chemical Technological State UniversityIvanovo

Personalised recommendations