organic compounds
The crystal structure determinations of trans-dimethyl 1,4-bis(difluoromethyl)-1,4-cyclohexanedicarboxylate, C12H16F4O4, trans-1,4-bis(difluoromethyl)-1,4-bis(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.