Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 56, Issue 8, Pages 1533-1541Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S1386-1425(99)00276-0
Keywords
ab initio calculations; IR/Raman spectroscopy; malonamide; tautomerism
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The conformational and tautomeric compositions of malonamide, NH2-C(O)-CH2-C(O)-NH2 were determined by vibrational spectroscopy and theoretical calculations (HF/6-31G*, B3PW91/6-31G*). Solid state Fourier transform infrared and Raman spectra were analysed. They reveal the existence of a diketo tautomer. Theoretical calculations predict a diketo structure belonging to the C-1 symmetry group. No enol form is present in the molecule in the solid. C-13-NMR studies show only signals of a diketo tautomer. (C) 2000 Elsevier Science B.V. All rights reserved.
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