JACS: The Long-Lived Nuclear Singlet State of 15N-Nitrous Oxide in Solution

Not a solid-state NMR article, but a very neat result from Malcolm Levitt's group.

ASAP J. Am. Chem. Soc., ASAP Article, 10.1021/ja803601d
Web Release Date: August 26, 2008

The Long-Lived Nuclear Singlet State of ¹⁵N-Nitrous Oxide in Solution

Giuseppe Pileio,^† Marina Carravetta,^† Eric Hughes,^‡ and Malcolm H. Levitt^*†

School of Chemistry, University of Southampton, SO17 1BJ, Southampton, U.K., and Nestlé Research Centre, NESTEC LTD, 1000 Lausanne 26, Switzerland

mhl@soton.ac.uk

Received May 14, 2008

Abstract:

A ¹⁵N nuclear singlet lifetime of over 26 min has been observed in a solution of ¹⁵N₂O, by using a field-cycling NMR pulse sequence. This observation suggests applications of hyperpolarized ¹⁵N₂O in medical imaging and for flow and diffusion studies.