Abstract
The interactions between N,N-dimethylformamide (DMF) and fluoroform (CHF3) in the gas phase are studied with the help of FTIR spectroscopy. Temperature changes observed in the region of the CO stretching mode of DMF suggest a weak complex formation that results in a red wavenumber shift of the ν(CO) band. Series of van Hoff plots obtained by means of temperature and concentration spectroscopic measurements give the energy of the complex formation ΔE ∼ −19.6 kJ/mol. Ab initio calculations performed at the MP2/6–311++G(df,pd) level are in good agreement with the experimental results.
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