Nonreactivity of rydberg states woodward-hoffmann forbidden [2s+2s] photochemical cycloadditions |
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| Authors: | Klaus Wittel |
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| Institution: | Anorganische Chemie II, Frankfurt University, BRD-6000 Frankfurt, Theodor Stern Kai 7, West Germany |
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| Abstract: | A theoretical analysis is presented for the 2s + 2s] cyclodimerisation of molecules in which the lowest unoccupied MO is of Rydberg nature. The concerted mechanism is forbidden by the Woodward-Hoffmann rules for the thermal and the photochemical path. However, the frontier MO approach predicts an enhancement of these reactions. Experiments related to this analysis are discussed. |
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