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KMID : 1059519840280020095
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Journal of the Korean Chemical Society
1984 Volume.28 No. 2 p.95 ~ p.101
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On the Aquation of Dichloro Bis-(Ethylenediamine)-Chromium (III) Cation
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Hwang Jung-Ui
Chung Jong-Jae
Baek Sung-Oh
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Abstract
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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.
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KEYWORD
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