Near Ultraviolet Spectrum of Crystalline Durene

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Abstract
The absorption and fluorescence spectra of single oriented crystals of durene (symmetric tetramethyl‐benzene) were photographed at 20°K in the 2800 A region. The ab plane of the crystal was investigated and it was found that the absorption intensity in the two polarization components in this plane was very nearly equal. The crystal splitting is less than 3 cm—1. The polarization properties of the absorption require the assignment of B2u for the lowest excited state of the parent molecule, benzene.

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