13C and 15N NMR spectra of aminobenzimidazoles in solution and in the solid state

M Angeles Garcia, RM Claramunt…

Index: Garcia, M. Angeles; Claramunt, Rosa M.; Solcan, Tomas; Milata, Viktor; Alkorta, Ibon; Elguero, Jose Magnetic Resonance in Chemistry, 2009 , vol. 47, # 2 p. 100 - 104

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Citation Number: 12

Abstract

Abstract The 13 C [hexadeutero-dimethylsulfoxide (DMSO-d 6), hexamethyl-phosphoramide (HMPA)-d 18 and solid-state] and 15 N (solid-state) NMR spectra of six C- aminobenzimidazoles have been recorded. The tautomerism of 4 (7)-aminobenzimidazoles and 5 (6)-aminobenzimidazoles has been determined and compared with B3LYP/6-311++ G (d, p) calculations confirming the clear predominance of the 4-amino tautomer and the ...

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