doi:10.1080/00958970500437997">
 

Title

The metal exchange reaction between NiMIDA and copper(II)

Document Type

Article

Publication Date

2006

Department/School

Chemistry

Abstract

The metal exchange reaction between copper(II) and N-methyliminodiacetatonickelate(II) (NiMIDA) was studied at 25.0°C and ionic strength of 1.25 within the pH range 3.5 to 4.8. The copper(II) to NiMIDA concentration ratio was varied over a two-hundred-fold range. The reaction is first-order in NiMIDA, copper(II) and hydrogen ion. The rate constant for the addition of copper(II) to NiMIDA is = 5.10 × 10−3 M−1 s−1. The rate constants for both the hydrogen ion dependent- and independent- dissociations of NiMIDA are, respectively, = 0.400 M−1 s−1 and k NiMIDA = 7.76 × 10−5 s−1. A mechanisim is presented which shows that MIDA does not prevent formation of a dinuclear intermediate and that MIDA partly unwraps from nickel before reacting with copper(II).

Link to Published Version

doi:10.1080/00958970500437997