RELATIONS BETWEEN THE ELECTROSORPTION AND THE INHIBITION BEHAVIOR OF HOMOLOGOUS DIALKYL-PHENYL-PHOSPHINE OXIDES

The electrode transfer reaction of Cd2+ has been studied under the influence of the homologous dialkyl-phenyl-phosphine oxides (R)2·C6H5·PO (R=CH3, C2H5, C3H7, C4H9, C5H11) using d.c. polarography. The rate constants were correlated with the adsorption data. The comparison of the rate constants with the surface pressure values shows that the rate constants decrease linearly with increasing surface pressure values. It could also be shown that the inhibitory effect grows as the length of the alkyl groups increases. © 1979 Elsevier Sequoia S.A.