Journal of the Chemical Society - Faraday Transactions p. 5047 - 5050 (1996)
Update date:2022-09-26
Topics:
Lagier, Claudia M.
Apperley, David C.
Scheler, Ulrich
Olivieri, Alejandro C.
Harris, Robin K.
Long-range deuterium isotope effects on the 31P NMR shielding tensor were studied for the perdeuteriated urea-phosphoric acid adduct (ND2)2CO·D3PO4. This complex contains a short hydrogen bond linking its molecular components, for which a single-minimum potential energy well has been suggested. The results indicate that (σ11 - σiso) decreases and (σ33 -σiso) increases for the deuteriated complex with respect to the undeuteriated adduct. This fact is consistent with the hypothesis of a single-minimum potential energy surface for the short hydrogen bond.
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