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1H NMR studies on thioamides: Barriers to internal rotation (1974)

Lepoivre, J. A. ; Desseyn, H. O. ; Alderweireldt, F. C.

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 6 (1974), S. 284-288

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ISSN: 0030-4921

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The barrier to the internal rotation of the dimethylamino group in thioamides of structure R—CS—N(CH3)2, R being (CH3)2,N—CS—, CH3O2C— or N≡C—, is studied by proton magnetic resonance, using the lineshape analysis method of Nakagawa. In the solvents o-dichlorobenzene, naphthalene and nitrobenzene all ΔG≠ values are in the range of 23 to 24 kcal/mol. In these solvents the Ea and ΔS≠ values of each product are linearly related to the dielectric constants.

Additional Material: 6 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/mrc.1270060510

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