ISSN:
1572-8927
Keywords:
Apparent molal heat capacity
;
aqueous solution
;
piperidines
;
morpholines
;
piperazines
;
heat capacity of protonation
;
solute-water interaction
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Apparent molal heat capacities $$\Phi _{C_p } $$ of some piperidine, morpholine, and piperazine derivatives in aqueous solution have been determined by adiabatic calorimetry in the temperature range 20–55°C and in the molality range 0.2–1m. Comparison of experimental $$\Phi _{C_p } $$ values with those calculated through group contributions, found for monofunctional compounds, indicates strong interactions between the hydrophilic centers. An interpretation is given of the possible mechanism of this interaction. Also, values of ΔC p for the addition reaction of proton to nitrogen centers of mono- and bifunctional organic compounds are examined.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00648894
