Abstract
Enthalpies of dilution of formamide, acetamide, propionamide, butyramide and hexanamide, dissolved in N-methylformamide have been measured calorimetrically at 25°C. From the results McMillan-Mayer coefficient related enthalpic pair and triplet interaction coefficients have been calculated. Except for those of formamide, all pair coefficients are negative, whereas the triplet terms are positive. The values in the protic solvent N-methylformamide presented in this paper together with those published before are compared with results for corresponding solutes dissolved in the aprotic solvent N,N-dimethylformamide. A discussion of the dependence of the interaction coefficients on the applied concentration scale is given and conversion factors are presented. The influence of hydrogen bonding, of substituent effects on this hydrogen bonding, and of polarophobic interaction is discussed. The latter is comparable in N,N-dimethyl-and N-methylformamide. The enthalpic pair interaction coefficients have been correlated with the Excess Group Additivity approach.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
