Walsh Cyclopropane Molecular Orbitals


  1. Pauling's "banana-bond" sp3-hybrid model may be found in L. Pauling, J. Am. Chem. Soc. 1931, 53, 1367.

  2. Walsh's original proposal:
    In this series of letters to Nature, Walsh proposed and defended his "coordination" model for oxirane and cyclopropane. These papers form an interesting series, in which one can see a scientific idea proposed, criticized, defended and modified, and finally supported from experiment.

  3. Walsh's full discussion of his cyclopropane model may be found in A.D. Walsh, Trans. Faraday Soc. 1949, 45, 179.

  4. For a detailed discussion that shows that properly-derived bent-bond models are equivalent to Walsh's model but may be a better qualitative description, see W.A. Bernett, J. Chem. Ed. 1967, 44, 17-24.

Background Walsh Cyclopropane home Derivation of the MOs

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