VIBRATIONAL SPECTRA OF $D_{2}O$ AND $ND_{3}$ ISOLATED IN $H_{2}O(S)$ AND $NH_{3}$ (S): PROTON TRANSFER RATES IN HYDROGEN BONDED SOLIDS
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Date
1979
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Ohio State University
Abstract
Recent studies have shown that proton transfer processes cease at low temperatures in $H_{2}O(s)$ and $NH_{3}(s)$. Consequently, it is possible, via a matrix isolation approach to isolate molecules such as $D_{2}O$ and $ND_{3}$, intact, in otherwise pure glassy or crystalline $H_{2}O$ and $NH_{3}$. $D_{2}O$ has been studied isolated in amorphous and crystalline $H_{2}O$ where decoupling of the vibrational modes has permitted evaluation of the relative importance of correlation field effects, the coupling of intramolecular bond oscillators and Fermi resonance $^{1,2,3,}$ similar decoupling results are now available for $ND_{3}$ in $NH_{3}(s)$ showing that the correlation field effects are small and nearly of magnitude less than for crystalline or amorphous $H_{2}O$. These results will be presented together with spectroscopically determined proton exchange rates and conclusions regarding energy barriers and mechanisms for proton exchange.
Description
$^{1}$G. Ritzhaupt and J. P. Devlin, J. Chem. Physics 67, 4779 (1977). $^{2}$G. Ritzhaupt, C. Thornton, and J. P. Devlin, Chem. Phys. Lett. 59, 420 (1978). $^{3}$M. G. Sceats. M. Stavola, and S. A. Rice, private communication.
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