Abstract:Comparative calculations of most stable geometries and proton affinities for a series of vinyl ethers and vinyl sulfides are made using the 4-31G and 3-21G(*) bases. While 4-31G and 3-21G(*) proton a5nities follow the same trends in the series, discrepancies arise for the molecular structures. 0x0 carbenium ions turn out to be better stabilized than their thio analogs, and interesting features in the atomic charge patterns are pointed out.
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