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Use of reverse cross-polarization for editing solid state proton NMR spectra

Potnuru, Lokeswara Rao and Yarava, Jayasubba Reddy and Pahari, Bholanath and Ramanathan, K V (2018) Use of reverse cross-polarization for editing solid state proton NMR spectra. In: JOURNAL OF MOLECULAR STRUCTURE, 1168 . pp. 49-55.

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Official URL: https://dx.doi.org/10.1016/j.molstruc.2018.04.097

Abstract

We present here the use of the cross-polarization- reverse cross-polarization (CP-RCP) method for editing proton spectra by identifying protons attached exclusively to a nucleus such as carbon or nitrogen. Experiments have been done at moderate spinning speeds utilizing the Combined Rotation and Multi-Pulse Scheme (CRAMPS) technique which provided resolution of the spectral lines that is sufficient for several small molecular systems. This approach, in addition to being an editing tool, helps to increase resolution further and also leads to identifying protons such as the OH and the SH protons. Here we present results of the application of the CP-RCP scheme to systems at natural abundance of the nuclei C-13 and N-15. The utility of the method has been illustrated for the case several amino acids, a tri-peptide and a synthesized cocrystal. (C) 2018 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belong to ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre: Division of Chemical Sciences > NMR Research Centre (Formerly Sophisticated Instruments Facility)
Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 16 Jul 2018 14:57
Last Modified: 16 Jul 2018 14:57
URI: http://eprints.iisc.ac.in/id/eprint/60165

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