The crystal structure determinations of trans-dimethyl -bis(difluorome
thyl)-1,4-cyclohexanedicarboxylate, C12H16F4O4, (difluoromethyl)-1,4-b
is(fluoromethyl)cyclohexane, C10H14F6, and trans-1,4-bis-(fluoromethyl
)-1, 4-bis( trifluoromethyl)cyclohexane, C10H12F8, confirmed the trans
assignment for each of the 1,4-disubstituted cyclohexanes.