Conformation of 1,2-dimethoxyethane in the gas phase: a rotational isomeric state simulation of NMR vicinal coupling constants

Conformational characteristics of 1,2-dimethoxyethane (DME) in the gas phase have been studied by the NMR method, Observed 1 H- 1 H and 13 C- 1 H NMR vicinal coupling constants are compared with those previously determined in nonpolar solvents. The values observed in the gas phase and in solution do not exhibit any appreciable discontinuity at the transition