Raman and infrared band shapes of the NH +...X-hydrogen bond in trimethylaminium halide crystals

The infrared and Raman band profile and band-width of the crystalline halides (CH 3) 3NH +X − in the v(NH) stretching vibration region are analyzed with the help of the temperature dependence and of the isotopic substitution effect. While the infrared v(NH) band-width is several times larger than th...

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Bibliographic Details
Published in:Chemical physics letters 1974-07, Vol.27 (1), p.111-113
Main Authors: Huong, P.V., Schlaak, M.
Format: Article
Language:English
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Summary:The infrared and Raman band profile and band-width of the crystalline halides (CH 3) 3NH +X − in the v(NH) stretching vibration region are analyzed with the help of the temperature dependence and of the isotopic substitution effect. While the infrared v(NH) band-width is several times larger than the Raman linewidth in the pure substance, the widths are about the same in the isotopic diluted system (CH 3) 3NH +Cl −/(CH 3) 3ND +Cl −. This result is explained by induced cooperative effects increasing strongly the anharmonicity of the electrical moment and not that of the polarizability of the NH oscillators.
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(74)80456-2