Investigations of molecular interactions in propionic acid-N,N-dimethyl formamide binary system--FTIR study.
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.
Umadevi
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M
Department of Physics, Mother Teresa Women's University, Kodaikanal 624102, Tamilnadu, India. ums10@yahoo.com
Poornima
R Regi
RR
D004126:Dimethylformamide / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D008968:Molecular Conformation; D011422:Propionates / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
D011422:Propionates; D004126:Dimethylformamide; C029658:propionic acid