Laser Photolysis Of Nitroaromatics

B. B. Craig; S. J. Atherton

doi:10.1117/12.943109

28 June 1984 Laser Photolysis Of Nitroaromatics

B. B. Craig, S. J. Atherton

Proceedings Volume 0482, Applications of Laser Chemistry & Diagnostics; (1984) https://doi.org/10.1117/12.943109
Event: 1984 Technical Symposium East, 1984, Arlington, United States

Abstract

We have measured time-dependent absorption spectra following nanosecond laser photolysis of some nitrotoluenes in several solvents. In non polar media, rapid intra-molecular hydrogen atom transfer occurs in electronically excited 2,4-dinitrotoluene to yield the aci-quinoid isomer, which is observed as a broad transient absorption. In methanol and in acetonitrile the initial aci-form subsequently undergoes deprotonation with a first-order rate constant of ca. 2 x 105 s-1, to form the 2,4-dinitrobenzyl anion. The corresponding anion is also generated from 2,4,6-trinitrotoluene in methanol, but we have been unable to demonstrate that its production occurs via the aci-form.

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B. B. Craig and S. J. Atherton "Laser Photolysis Of Nitroaromatics", Proc. SPIE 0482, Applications of Laser Chemistry & Diagnostics, (28 June 1984); https://doi.org/10.1117/12.943109

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