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SYNOPSISThe effect of the polymeric matrix structure on the acidic-base, coordination, and kinetic properties of reticular poly (vinylpyridines) (RPVPs) obtained by copolymerization of 4vinylpyridine (AH-40) and 2-methyl-5-vinylpyridine (AH-25) with divinyl aromatic compounds has been investigated by potentiometric as well as by IR and EPR spectroscopic met hods.The increase in the content of the crosslinking agent results in a lower pK, of RPVP and in reduced stability constants of their complexes with transient metal ions; therefore, the defectiveness of the coordination centers is increased.The nature of the crosslinking agent determines the flexibility of the polymeric matrix and the availability of electron-donor groups in them affects the structure of the average statistical coordination center, thus bringing about a change in the RPVP electron-donor properties and in the stability constant of the polymeric complex. 309

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