Dicarboxylic adds metal complexes

The solutes resolved by the Type IV CSPs must be able to form coordination complexes with transition metal ions. This limits the classes of compounds to a-amino acids and mono- and dicarboxylic acids containing an ot hydroxyl moiety. The most common solutes resolved on these CSPs are underivatized amino acids, although a number of derivatized amino acids can be resolved, including W-acetyl, amide, N-carbamoyl, N-carbo-benzoxy, and hydantoin derivatives, as well as complex amino adds such as the biochemical modulator BSD (79). 

The kinetics of the oxidations of the mixed-metal cuboidal complexes [MojNiS4(H20)io] -" and [Mo3FeS4(H20)io] + by [Co(dipic)2] (dipic =pyridine-2,6-dicarboxylate) and [Fe(H20)6] have been studied as a function of acid concentration/ The oxidations by the cobalt complex are acid-independent and outer-sphere, whereas the oxidations by Fe " (aq) proceed by outer-sphere acid-independent ([Fe(H20)j] " ) and inner-sphere (OH -bridged) add-dependent ([Fe(H20)50H] ) pathways. 

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