ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 28, Number 2
JKCSEZ 28(2)
April 20, 1984 

Aquation reaction kinetics of [Cr(en)2Cl2]+complex was carried by the electric conductivity method. Its temperature range was 15℃ to 30℃ and pressure was varied up to 2,000 bars. The reaction rate was increased with increasing temperature, but was reversed to increasing pressure. The activation volume(ΔV≠) was increased with increasing temperature and decreased with increasing pressure. At 25℃ and 1 bar it was fairly small positive value, 1.82cm2/mole. Activation entropy change(ΔS≠) was calculated as small negative value,-9.019 eu, at 25℃ and 1bar. Referring to the thermodynamic parameters, it was estimated that aquation reaction was proceeded by the interchange-dissociation(Id) mechanism.