Influence of Hydrostatic Pressure upon Hydroxy and Methoxy Isomers of Substituted Anthracene and Naphthacene

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Abstract
The effects of hydrostatic pressure upon the long‐wavelength absorption bands of 1‐ and 2‐anthrols, and a newly synthesized, related compound, 2‐methoxynaphtahcene, have been studied. The spectral shifts resulting from the application of hydrostatic pressure upon solutions of these compounds have been used as a means for distinguishing between overlapping transition. The observations by Baba and Suzuki concerning the anthrol spectra have been confirmed; and a correlation of the 2‐methoxynaphthacene spectra with those of related hydroxy‐substituted aromatic compounds is used to suggest a different band assignment from that predicted on the basis of resonance theory.