A KINETIC STUDY OF ACID DISSOCIATION AND SOLVOLYSIS II. CHLORO, BROMO AND IODOPENTAAMMINECOBALT (III) PERCHLORATE IN LIQUID AMMONIA
- 1 January 1975
- journal article
- research article
- Published by Taylor & Francis in Journal of Coordination Chemistry
- Vol. 4 (3) , 167-172
- https://doi.org/10.1080/00958977508075895
Abstract
For the complexes Co[NH3] 5 C1[C1O4]2, Co[NH3] 5 Br[ClO4]4 and Co[NH3] 5I[C1O4]2 reaction rates to the corresponding hexaammines in liquid ammonia have been determined spectrophotometrically at a fixed electrolyte concentration of 0.2 m and at varying temperature. For the first time for the SN1 CB reaction mechanism of cobalt complexes the values of the rate determining step and of the conjugate base constant could be separated; this could be realized for the complexes Co[NH3]5C1[C1O4]2 and Co[NH3] 5Br[C1O4]2. Activation parameters of the reaction are discussed and compared to the rates of hydrolysis.Keywords
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