Binding study to sodium cholate aggregates using a kinetic method and the reaction: [Ru(NH_3)_5pz]~(2+) + [Co(C _2O_4)_3]~(3-) as a probe

摘要

The electron transfer reaction between [Ru(NH_3) _5pz]~(2+) and [Co(C_2O_4) _3]~(3-) was studied in the presence of monomers and aggregates of sodium cholate at 298.2 K. The results show a decreasing rate constant with the successive addition of NaC (sodium cholate). To rationalize the dependence of the reaction rate on [NaC] a stepwise self-association model was used. In addition, the kinetic results agree with the form that adds the monomers, which implies that in NaC aggregates the Stern layer is not well defined.