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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

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Electronic and Vibrational Absorption Spectra of NH2 in Solid Ne.

Chou Sheng-Lung SL Lo Jen-Iu JI Peng Yu-Chain YC Lu Hsiao-Chi HC Cheng Bing-Ming BM

ACS omega 20190129 1

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 le ...[more]

PMID: 31459469

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