Electronic and Vibrational Absorption Spectra of NH₂ in Solid Ne.

ABSTRACT: Irradiation of ammonia dispersed in solid neon near 4 K with tunable far-ultraviolet light from a synchrotron yielded amidogen, NH₂, and imidogen, NH, radicals as products. The electronic absorption spectra of amidogen radicals in isotopic variants NH₂, NHD, and ND₂ were recorded in the visible and near-ultraviolet regions after photolysis of NH₃ and ND₃. The infrared absorption lines of NH₂ associated with vibration-rotational levels of vibrational modes ?₁ at 3234.3 (0_0,0-1_0,1), 3244.9 (0_0,0-1_1,1), and 3249.3 cm^-1 (0_0,0-1_1,0), and ?₂ at 1498.7 (1_0,1-1_1,1), 1509.5 (1_1,0-1_0,1), 1516.5 (0_0,0-1_0,1), 1528.6 (0_0,0-1_1,1), and 1533.7 cm^-1 (0_0,0-1_1,0) were unambiguously identified according to the results of experiments with deuterium isotopes. The 0_0,0-0_0,0 lines of ?₁ and ?₂ for NH₂ were derived to be at 3213.5 and 1494.6 cm^-1 in solid neon.

SUBMITTER: Chou SL 

PROVIDER: S-EPMC6648315 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature