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organic compounds
The crystal structure analyses of the title substituted p-terphenyls, 2'-(p-methoxyphenyl)-3'-phenyl-p-terphenyl, C31H24O, and 2',3'-bis(p-methoxyphenyl)-p-terphenyl, C32H26O2, show that the pendant phenyl rings greatly affect the conformation. Different conformations result from rotation of the terminal rings about the long molecular axis of the p-terphenyl part of the molecule.