Radiative association in dense, H/sub 2/-containing interstellar clouds

A method for estimating the order of magnitude of rate coefficients of radiative association reactions involving polyatomic species is outlined. Calculations are undertaken on reactions of possible importance in dense interstellar clouds. Several of the calculated rate coefficients are utilized in a study of the gas phase syntheses of H/sub 2/CNH (methanimine) and H/sub 3/CNH/sub 2/ (methylamine). (AIP)