ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 33, Number 6
JKCSEZ 33(6)
December 20, 1989 

Rates for aquation of [Cr(NH3)5(DMF)]3+ ion in aqueous acidic solution have been measured by spectrophotometric method at various temperatures and pressures. The volume of activation for the aquation is small negative and lies in the limited range -2.76 ∼ -3.65 cm3 mol-1. The entropy and compressibility coefficient of activation are small negative values. From the results of thermodynamic activation parameters, it can be inferred that the aquation of [Cr(NH3)5(DMF)]3+ ion proceeds through an associative interchange(Ia) mechanism.