JMSSJ On-line

JMSSJ On-line, Vol. 46 (1998) No. 4, pp. 304-307

Elimination Processes of Guest Molecules from the Inclusion Complexes of Cholic Acid		>> Full Text PDF >> References
*Takayoshi KIMURA,^a) Hideki IMAMURA,^a) Akinori SHIMOWADA,^a) and Sadao TAKAGI^a)* ^a) Department of Chemistry, Kinki University (Higashi-osaka, Osaka 577-8502, Japan)*

Thermal behaviors of the inclusion complexes of cholic acid with propanol, acetylacetone, propylbenzene, and water have been studied by TG-DTA-MS and DSC. Liberation processes of water from their inclusion complexes carried out in a single step. Those of propanol, acetylacetone, propylbenzene from the corresponding inclusion complexes proceeded in only two stages. The elimination temperatures, enthalpies, and the activation enthalpies of eliminations have been determined. Increasing orders of the enthalpies of decomposition and the activation energies of the initial elimination are in agreement with modes of molecular packing reported.

Key words: Inclusion complex, Cholic acid, Methanol, Ethanol, Propanol, Acetylacetone, Propylbenzene, Water, Activation energy of elimination