Add time:08/17/2019         Source:sciencedirect.com

The i.r. spectra of methanol—ammonia and methanol—triethylamine systems in the solid state are reported, and the internal modes of CH3OH · NH3, CH3OD · ND3 and CD3OD · ND3 and the OH(D) stretching of (methanol)n · triethylamine (n = 1 or 2) are assigned. The OH(D) stretching in the former system is lower, about 360 (190) cm−1, than that in the latter one. This abnormal behavior is explained by the hydrogen bond formed among methanol · ammonia species, resulting in the polymeric chain structures. The OH(D) stretching of those systems has some structure, which is explained by Fermi resonance between the fundamental and the first overtone or the combination of the OH(D) in-plane bending.

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