Sigmasigma* transition in anti,cisoid alternating oligosilanes: clear-cut evidence for suppression of conjugation effect by a cisoid turn |
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Authors: | Tsuji Hayato Terada Masayoshi Toshimitsu Akio Tamao Kohei |
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Affiliation: | Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan. |
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Abstract: | On the basis of the UV absorption spectra of the anti,cisoid alternating oligosilanes, the first experimental clear-cut evidence was presented for the generally accepted idea that the sigma conjugation in polysilanes does not effectively extend through a tetrasilane fragment with a small dihedral angle such as a cisoid turn. |
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