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ISRAEL JOURNAL OF CHEMISTRY
Volume 47, Issue 1, Pages 11-16Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1560/IJC.47.1.11
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The molecular dynamics of methylamine, CH3NH2, was investigated via vibrationally mediated photodissociation. It was found that the similar to 243.1 nm photolysis of initially excited N-H and C-H fundamental stretches and combinations and overtones of methyl deformation yields H photofragments. Surprisingly, the deformations promote the H atom release more effectively, implying mode-dependent enhancement of photodissociation in a relatively large molecule with a torsional degree of freedom. The H Doppler profiles correspond to low translational energies, supporting the dominant non-adiabatic N-H dissociation channel.
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