Alkaline hydrolysis of Co(Asn)2 (Asn = L-asparagine)

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The kinetics of alkaline hydrolysis of Co(Asn)2, yielding Co(OH)2, NH3 and aspartic acid, have been studied spectrophotometrically, and the effects of CoII and NaOH concentrations on the reaction rate determined. The rate increases with increasing [NaOH], whereas variation of [CoII] has no significant effect. The kinetics of NH3 evolution conform to the rate law:

It is proposed that the reaction proceeds through formation of a dianionic tetrahedral intermediate.

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