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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 10, Number 2
BKCSDE 10(2)
February 20, 1989 

Kinetics of Complexation of Alkali Earth Metal Ions with 18-Crown-6-Ether in Methanol
Sock Sung Yun*, Seong Heon Kim, Joon Mook Yang, Ki Young Choi
The rates of complexation of the 18-C-6 (1,4,7,10,13,16-hexaoxacyclooctadecane) with K+, Ca2+, Sr2+, and Ba2+ in methanol solution have been determined at 25℃ by a pressure-jump technique. The Eigen Winkler mechanism has been applied to interprete the kinetic data. The results suggest that the rate determining step of the complexation in methanol is the rearrangement of the ligand in the outer sphere ion-dipole pair to form a stable encapsulated complex of the metal ion by the crown ether.
155 - 158
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