Structural Isomerism and the Electronic Basis for Ligand Segregation on C2 Cores

  • Nicolaos Demetrios Epiotis
Part of the Lecture Notes in Chemistry book series (LNC, volume 34)


One of the most fascinating trends of molecular stereochemistry is the tendency of ligands to segregate into sets when attached on carbon cores. A typical example is provided by the comparison of 1,1 and cis 1,2-difluoroethylene, henceforth referred to as G and C 1,2 difluoroethylene, respectively.


Carbon Core Symmetry Orbital Electronic Basis Sigma Bond Anti Bond 
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  1. 1.
    Epiotis, N.D., Larson, J.R., Yates, R.L., Cherry, W.R., Shaik, S., Bernardi, F., J. Am. Chem. Soc. 1977, 99, 7460.CrossRefGoogle Scholar
  2. 2.
    See the previous chapter.Google Scholar
  3. 3.
    Epiotis, N.D.; Cherry; W.R.; Shaik, S.; Yates, R.L.; Bernardi, F. Top. Curr. Chem. 1977, 70, 1.CrossRefGoogle Scholar
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  5. 5.
    a) See Ref. 3.Google Scholar
  6. (b).
    Brunck, T.K., Weinhold, F., J. Am. Chem. Soc. 1979, 101, 1700.CrossRefGoogle Scholar
  7. 6. (a)
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  8. b) Greenberg, A., Sprouse, S.D., Liebman, J., to be published.Google Scholar
  9. 7.
    Epiotis, N.D., Larson, J.R., Eaton, H., “Unified Valence Bond Theory of Electronic Structure” in Lecture Notes in Chemistry, Vol. 29; Springer-Verlag: New York and Berlin, 1982.Google Scholar
  10. 8.
    This fact is borne out by practially all kinds of calculations: Epiotis, N.D. unpublished results. See also Ref. 1.Google Scholar
  11. 9.
    Callomon, J.H., Hirota, E., Kuchitsu, K., Lafferty, W.J., Maki, A.G., Pote, C.S., in Landolt-Bornstein “Numerical Data and Function Relationships in Science and Technology” Vol. 7., New Series, “Structure Data on Free Polyatomic Molecules”; K. H. Hellwege, Ed.; Springer-Verlag: West Berlin, 1976.Google Scholar
  12. 10.
    For such a “computational experiment” see Ref. 6a.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1983

Authors and Affiliations

  • Nicolaos Demetrios Epiotis
    • 1
  1. 1.Department of ChemistryUniversity of WashingtonSeattleUSA

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