Catalysis by Water-Soluble Polymer-Metal Complexes

2 Catalysis by Water-Soluble Polymer-Metal Complexes 

It has been shown [69] that the action of biocatalysts can be modeled by using synthetic polymers through preparation of ternary polycarboxylate-metal ion-low-molec-ular weight ester complexes  

The catalytic activity of monomeric and polymeric complexes decreases in the order CoCI(DH)2P4VP CoCl(DH)2Pyridine CoCN(DH))2P4VP CoCN(DH)2 pyridine, and depends on the nature of the X-ligand. 

Copolymer complexes of mono- and dialkyl esters of itaconic acid modified by ethylene imines, with C0CI2 and CUCI2, have been obtained with the following structure [73,74]. 

The reactivity of polymeric catalysts has been compared with that of cobalt(II) tran -dichloro-bis-ethylenediamine. At a fixed cobalt concentration the rate of H2O2 decomposition was found to be considerably higher for polymer-supported catalysts. 

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The first chapter of the book deals with enzyme-like eatalysis by synthetic polymers - catalysis by polymeric acids and bases, amphoteric polyelectrolytes and nonionic polymers. Because coordination compounds of metal ions with macromolecular ligands are interesting with regard to bioinorganic chemistry, this book elucidates some problems involving the catalysis by water-soluble polymer-metal complexes. Ester hydrolysis, hydrogen peroxide decomposition, oxidation of disubstituted phenols, hydroquinones, mercaptoalcohols and other types of reaction are chosen as model processes. A section devoted to interfacial catalysis is also included. 

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