Electron transfer reactions between copper(ii) porphyrin complexes and various oxidizing reagents in acetonitrileElectronic supplementary information (ESI) available: Figures reporting the UV-visible absorption spectra of [Cu(OEP)] and the product of the reaction of [Cu(OEP)] with Cu(ii) triflate in acetonitrile, the dependence of the absorbance on the ratio of the total concentrations of Cu(ii) ion and [Cu(OEP)] for the reaction of [Cu(OEP)] and Cu(ii) triflate, and the dependence of the pseudo-first-order rate constant of the reaction of [Fe(phen)3]3+ with [Ni(tacn)2]2+ on the concentration of the Ni(ii) complex. Tables of the second-order rate constant of the reaction of [Fe(phen)3]3+ with [Ni(tacn)2]2+ and the electron transfer properties of the complexes used in the present study. See http://www.rsc.org/suppdata/dt/b4/b403760j/