2018
DOI: 10.1021/acs.jchemed.8b00292
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3-D Topo Surface Visualization of Metal Ion Anti-buffering: An Unexpected Behavior in Metal–Ligand Complexation Systems

Abstract: Diluting a system with metal complexes can sometimes cause free metal ions to increase in concentration. This paper describes “metal ion anti-buffering”, a situation in which free metal ion concentrations rapidly increase as system dilution drives dissociation. It only occurs under excess free ligand conditions when a solution is dominated by higher stoichiometry complexes. The Law of Mass Action is used to provide a mathematical justification for the phenomenon. A Cu2+-ethylenediamine mixture exhibits this ph… Show more

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