Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 841, Issue 1-3, Pages 61-66Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2006.11.058
Keywords
dynamic H-1-NMR; imidoyl azides; imidoyl iminophosphoranes; E/Z isomerization; rotation about the N-S bond
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Dynamic H-1-NMR (500 MHz) investigation of aryl-N-(arylsulfonyl)-N-(triphenylphosphoranylidene)imidocarbamates in CDCl3, CD3COCD3, and CD3OD at the temperature range of 183-298 K is reported. The observed free energy barriers (almost 12 kcal mol(-1)) are attributed to conformational isomerization about the N-S bond and these barriers show very little solvent dependence. (C) 2006 Elsevier B.V. All rights reserved.
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