LASER STARK SPECTROSCOPY OF THE NU-4 FUNDAMENTAL-BAND OF CH2NH AT 6.1 MU-M

The ν4 fundamental band of CH2NH has been studied by the technique of intracavity CO laser Stark spectroscopy. The short-lived CH2NH was produced in a flow system by the pyrolysis of CH 3NH2 at ∼1000°C. The ν4 band origin was determined to be 1638.2976±0.0015 cm-1, and accurate values for the excited state rotational constants were found. The ground state dipole moment components were determined to be μa = 1.3396 D and μb = 1.4461 D, for a total dipole moment of μ = 1.9712 D. Very similar dipole moments were found for the ν4 = 1 excited state: μa = 1.3445 D; μb = 1.4412 D; and μ = 1.9710 D. © 1979 American Institute of Physics.