Dipole Moments of Polyethylene Glycol Diethyl Ethers

The dipole moments of six lower members of the polyethylene glycol diethyl ethers have been measured, and their configurations have been studied. As the configurations of these compounds the two models have been considered; one is a mixture of the various rotational isomers, and the other a model in which the positions of the internal rotations of two C–O bonds around the C–C bond approximately take the gauche positions with regard to each other, and the positions of the C–O bond and the C–C bond around the C–O bond take positions similar to those mentioned above with regard to each other.