Deuterium isotope effects on 31 P NMR parameters: hydrogen bonding in a solid urea–phosphoric acid adduct

…, DC Apperley, U Scheler, AC Olivieri…

Index: Lagier, Claudia M.; Apperley, David C.; Scheler, Ulrich; Olivieri, Alejandro C.; Harris, Robin K. Journal of the Chemical Society - Faraday Transactions, 1996 , vol. 92, # 24 p. 5047 - 5050

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Citation Number: 10

Abstract

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 ...