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Photochromism mechanism and relative stability of dinitrobenzylpyridine

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Abstract

UV and IR spectra, are considered, together with the effects of temperature, solvents, and radiation intensity for this class of compound; the conditions for observing the effects are reported. The mechanism is elucidated via calculations of the relative stability of the tautomers ofα-dinitrobenzylpyridine by the Pariser-Parr-Pople method. It is found that the most probable structure for the colored form is an acynitro one, and the acidity of the solution determines whether this exists in the neutral, or anionic form. This agrees with the kinetics of the reverse reaction.

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Authors and Affiliations

  1. Kuznetsov Siberian Technical Physics Institute, Tomsk University, USSR

    A. G. Turovets & V. I. Danilova

Authors
  1. A. G. Turovets
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  2. V. I. Danilova
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 68–73, April 1972.

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Turovets, A.G., Danilova, V.I. Photochromism mechanism and relative stability of dinitrobenzylpyridine. Soviet Physics Journal 15, 526–530 (1972). https://doi.org/10.1007/BF00892573

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  • DOI: https://doi.org/10.1007/BF00892573

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