Summary
The kinetics and mechanism of reactions of cyanide ion with [NiL] and [Ni2L] (L = hexamethylenediaminetetraacetic acid) have been studied spectrophotometrically at 25 ±0.1 °C, with pH=11.0±0.02, and I=0.1 M(NaClO4). In both reactions the final product was [Ni(CN)4]2−. The order with respect to [CN−] was found to be one over a wide range of cyanide ion concentrations for both the systems.
In the Ni2L-CN− system, however, the reaction becomes zero order with respect to cyanide when [CN−]<6×10−4 M.
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Naik, R.M., Nigam, P.C. Kinetics and mechanism of ligand substitution reactions of NiL and Ni2L with cyanide ion (L = hexamethylenediaminetetraacetic acid). Transition Met Chem 11, 11–15 (1986). https://doi.org/10.1007/BF01064493
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DOI: https://doi.org/10.1007/BF01064493