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Selective assignments in 13C NMR spectra of chloroalkanes by J-Modulated 13C spin echo
Affiliation:1. Laboratoire de Physico-Chimie des Matériaux Vitreux et Cristallisés, Université Ibn Tofail, Faculté des Sciences, Kénitra 14090, Morocco;2. Laboratoire d''Electrochimie, Corrosion et Environnement, Université Ibn Tofail, Faculté des Sciences, Kénitra, Morocco
Abstract:The application of the JCH-modulated 13C spin echo is extended to chloroalkanes. One-bond coupling constants of protonated carbons are increased significantly by chlorine substitution. Nulling of resonance signals from CHx and chlorine substituted carbons is observed at selected echo delays. Assignments in 13C spectra of mixtures of chloroalkanes are derived from subspectra recorded at suitably chosen echo delays.
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