Effect of deuteration on hydrogen bonds

Ramachandra Rao, C. N. (1975) Effect of deuteration on hydrogen bonds Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 71 (10). pp. 980-983. ISSN 0300-9599

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Official URL: http://pubs.rsc.org/en/content/articlelanding/1975...

Related URL: http://dx.doi.org/10.1039/F19757100980


A study of the 1:1 interaction of CH3OD and t-C4H9OD as well as the corresponding hydroxy derivatives with electron donor molecules has shown that the enthalpies of formation of complexes are generally increased by ~1 to 2 kJ mol−1 on deuteration. Enthalpies of dimerization of t-C4H9OH and t-C4H9OD are comparable. Deuterium bond energies may be lower than hydrogen bond energies only for very short hydrogen bonds. The shift in the O-H stretching frequency ΔVOH is related to ΔVOD by the relation, ΔVOH≈1.414 ΔVOD as expected on the basis of mass effect alone.

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