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- W2048772717 abstract "Abstract The reactions of CN − and NCS − with meso-tetra(4 - N - methylporphinediaquochromium(III), CrP(H 2 O) 2 5+ , have been studied at different temperatures in the pH range 1–13. The kinetic and equilibrium properties are adequately described by the following scheme: The values of pK a 1 at 25°C are 6.74 and 10.66 respectively. The values of k 1 , k −1 , k 2 and k −2 for NCS − and of k 2 and k −2 for CN − have been determined at three different temperatures. The values of ΔH ∗ and ΔS ∗ for all the reactions have also been determined. ΔS ∗ was negative for all the reactions. The presence of the porphine and specially the presence of the porphine and the OH − ligands in the complex greatly labilizes chromium (III) toward substitution." @default.
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- W2048772717 date "1981-01-01" @default.
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- W2048772717 title "Kinetic and equilibrium study of the reaction of meso-tetra (4-N-methylpyridyl) porphinediaquochromium (III) with thiocyanate and cyanide ions in aqueous solution" @default.
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- W2048772717 doi "https://doi.org/10.1016/0022-1902(81)80095-4" @default.
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