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Excitation and correlation of N-14 overtone transitions and measurement of heteronuclear dipolar coupling using DAPT

Jayanthi, S and Ramanathan, KV (2011) Excitation and correlation of N-14 overtone transitions and measurement of heteronuclear dipolar coupling using DAPT. In: Chemical Physics Letters, 502 (1-3). pp. 121-125.

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Official URL: http://dx.doi.org/10.1016/j.cplett.2010.12.007

Abstract

For studying systems containing nitrogen, limited use of N-14 NMR spectroscopy has been made because of the large quadrupolar interaction experienced by the N-14 nucleus and the absence of a central transition. To overcome the above problem, use of overtone spectroscopy has been suggested. Though this approach has limited applicability for powder samples due to second order quadrupole broadening, it is useful for studying oriented samples and single crystals. Here, we demonstrate the use of the recently proposed dipolar assisted polarization transfer (DAPT) pulse scheme for exciting the overtone transitions. The pulse sequence may also be utilized as a two-dimensional experiment to obtain H-1-N-14 dipolar couplings and H-1 chemical shifts. (C) 2010 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science B.V.
Department/Centre: Division of Chemical Sciences > NMR Research Centre (Formerly SIF)
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 01 Mar 2011 11:32
Last Modified: 01 Mar 2011 11:32
URI: http://eprints.iisc.ernet.in/id/eprint/35828

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