Canadian Journal of Chemistry · 1959 · 19 citations · 0 references
Natural SciencesChemistryCrystal StructureOrganic ChemistrySpectroscopyAmino Acid ChemistryAmino Acid StructureInfrared SpectroscopyMolecular VibrationVibrational StructureAbsorption SpectraAmino Acid DerivativesAmino Acid SpectroscopyAmino AcidsInfrared Absorption SpectraInfrared Absorption SpectroscopyInfrared SpectraInfrared Spectral Assignment
A correlation between the infrared absorption spectra and the structure of 13 N-mono- and N-di-substituted trichloroacetamidines is presented. N-Alkyl- and N-aryl-trichloroacetami-dines associate strongly in the liquid and solid phases, and exist only in the imino form in non-polar solvents. They can be characterized by a strong band (amidine II band) at 1510–1525 cm− 1 and 1570–1580 cm− 1 respectively which is attributed to the deformation vibration [Formula: see text] of the secondary amino group. The degree of association of N-substituted trichloroacetamidines changes in the following order of substitution:[Formula: see text]