Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9587488 | Journal of Magnetic Resonance | 2005 | 5 Pages |
Abstract
An isotope-filtered selective refocusing (IFSERF) experiment is presented for the sensitive and precise measurement of the proton-proton coupling constant between chemically equivalent protons. The 2D NMR method combines an initial doubly selective isotope filter based on heteronuclear cross-polarization followed by a selective J-resolved block. The coupling topologies obtained from several 2D variants of the IFSERF experiment are described for the simultaneous measurement of both proton-proton and proton-carbon coupling constants in the involved AAâ²XXâ² spin system. Application on the determination of the relative configuration of double bonds in symmetrical molecules is illustrated.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Pau Nolis, Anna Roglans, Teodor Parella,