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J-Edited Pure Shift NMR for the Facile Measurement of (n)J(HH) for Specific Protons

Chaudhari, Sachin Rama and Suryaprakash, N (2015) J-Edited Pure Shift NMR for the Facile Measurement of (n)J(HH) for Specific Protons. In: CHEMPHYSCHEM, 16 (5). pp. 1079-1082.

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Official URL: http://dx.doi.org/10.1002/cphc.201402792

Abstract

We report a novel 1D J-edited pure shift NMR experiment (J-PSHIFT) that was constructed from a pseudo 2D experiment for the direct measurement of proton-proton scalar couplings. The experiment gives homonuclear broad-band H-1-decoupled H-1 NMR spectra, which provide a single peak for chemically distinct protons, and only retain the homonuclear-scalar-coupled doublet pattern at the chemical-shift positions of the protons in the coupled network of a specific proton. This permits the direct and unambiguous measurement of the magnitudes of the couplings. The incorporation of a 1D selective correlation spectroscopy (COSY)/ total correlation spectroscopy (TOCSY) block in lieu of the initial selective pulse, results in the exclusive detection of the correlated spectrum of a specific proton.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the WILEY-V C H VERLAG GMBH, BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
Keywords: analytical methods; broadband decoupling; homonuclear scalar couplings; NMR spectroscopy; pure shift spectra
Department/Centre: Division of Chemical Sciences > NMR Research Centre (Formerly Sophisticated Instruments Facility)
Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Id for Latest eprints
Date Deposited: 28 Apr 2015 07:23
Last Modified: 28 Apr 2015 07:23
URI: http://eprints.iisc.ac.in/id/eprint/51419

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