Re: CCL:HYBRIDIZATION NOT "REAL";V. FOCK



Before people get too worked up about the "reality" of hybridization, they might pause and enjoy this quote from Coulson's "Valence", p. 219, section 8.14 Status of hybridization:

"The previous discussion has brought out clearly the very wide context in which hybridization seems to be relevant. We must not, however, allow ourselves to believe that it represents any real 'phenomenon', any more than resonance between different structures such as the covalent and ionic ones of a polar bond may be called a 'phenomenon'. But we can at least say:
(a) that hybridization is the most efective way of preserving the concept of a localized bond with perfect pairing of orbitals on the two atoms of the bond;
(b) that it is a restricted form of resonance, so that a residual resonance, due to alternative schemes of pairing, still exists."

I don't see anything here to disagree with.

-Alan

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Alan Shusterman
Department of Chemistry
Reed College
Portland, OR 97202