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Wiley, Chemistry - A European Journal, 8(21), p. 3472-3479, 2015

DOI: 10.1002/chem.201405535

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Precise Measurement of Long-Range Heteronuclear Coupling Constants by a Novel Broadband Proton–Proton-Decoupled CPMG-HSQMBC Method

Journal article published in 2015 by István Timári, Tünde Z. Illyés, Ralph W. Adams ORCID, Mathias Nilsson, László Szilágyi, Gareth A. Morris, Katalin E. Kövér
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Abstract

A broadband proton-proton-decoupled CPMG-HSQMBC method for the precise and direct measurement of long-range heteronuclear coupling constants is presented. The Zangger-Sterk-based homodecoupling scheme reported herein efficiently removes unwanted proton-proton splittings from the heteronuclear multiplets, so that the desired heteronuclear couplings can be determined simply by measuring frequency differences between singlet maxima in the resulting spectra. The proposed pseudo-1D/2D pulse sequences were tested on nucleotides, a metal complex incorporating P heterocycles, and diglycosyl (di)selenides, as well as on other carbohydrate derivatives, for the extraction of (n)J(H-1, P-31), (n)J(H-1, Se-77), and (n)J(H-1, C-13) values, respectively. ; Cb5jw Times Cited:1 Cited References Count:61