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Investigations of molecular interactions in propionic acid-N,N-dimethyl formamide binary system--FTIR study
1Department of Physics, Mother Teresa Women's University, Kodaikanal 624102, Tamilnadu, India. ums10@yahoo.com
Abstract:
FTIR spectra of propionic acid (PA), N,N-dimethyl formamide (DMF) and its binary mixtures with varying molefractions of the PA were recorded in the region 500-3500 cm(-1), to investigate the formation of hydrogen bonded complexes in a mixed system. The observed features in nu(C=O), delta(O=C-N) and nu(as)(CN) of DMF, nu(C=O) and nu(CO) of PA have been explained in terms of the hydrogen bonding interactions between DMF and PA and dipole-dipole interaction. The intrinsic bandwidth for the vibrational modes nu(as)(CN) and nu(CO) has been elucidated using Bondarev and Mardaeva model.
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