Reports

Photoisomerism: A Colorless Photoinduced Intermediate of o-Nitrobenzylpyridine

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Science  16 Oct 1964:
Vol. 146, Issue 3642, pp. 397-398
DOI: 10.1126/science.146.3642.397

Abstract

Exposure to light of o-nitrobenzylpyridines at —185°C yields a long-lived colorless intermediate which is converted to a colored isomer on warming.