Electron affinities of double bond π* orbitals determined by means of electron transmission spectroscopy |
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Authors: | Alberto Modelli Derek Jones Sandra Rossini Giuseppe Distefano |
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Affiliation: | 1. Istituto Chimico “G.Ciamician”, Universitá di Bologna, Via F. Selmi 2, 40126 BolognaItaly |
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Abstract: | The electron transmission spectra of small molecules containing C=C, C=N, C=O, C=S and N=N double bonds are reported. The electron affinities of these functional groups, associated with electron capture into their empty π* orbitals, are discussed in terms of heteroatom electronegativities, geometrical variations and localization properties of the π* orbitals. The largest electron acceptor properties were observed in the thioketone derivative, which generates a stable π anion state. The ionization energy values relating to the heteroatom lone pair and the filled π orbitals are also reported. |
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