HYDROGEN-BONDING TO DIMETHYLAMINE - THE MICROWAVE-SPECTRUM AND STRUCTURE OF THE DIMETHYLAMINE-WATER COMPLEX

a- and c-type rotational transitions have been observed for four isotopomers for the dimethylamine-water complex using a Fourier-transform microwave spectrometer. The rotational constants of the four isotopomers are consistent with a structure in which the water acts as a hydrogen bond donor to the dimethylamine (R(NO) = 2.82 Angstrom). The dipole moment is 2.78 (1) D. The N-14 and O-17 nuclear quadrupole coupling constants were measured and their projections onto the inertial axes are compared with predictions based on structural models.