1968 Volume 41 Issue 9 Pages 2064-2066
Polarographic behavior of tris(2,2′-bipyridine)manganese(II) perchlorate at the dropping mercury electrode in acetonitrile solutions has been investigated by the measurement of d.c., a.c. and Kalousek polarograms. The manganese(II) complex gave a five-step reduction wave and a one-step oxidation wave at the dropping mercury electrode when tetraethylammonium perchlorate was used as supporting electrolyte. In the presence of a large concentration of free 2,2′-bipyridine, the limiting currents of the first three steps of the reduction of the manganese(II) complex are all diffusion-controlled and of a one-electron reduction process. The electrode processes for these steps have been concluded to be the reductions to [Mn(bipy)3]+, [Mn(bipy)3] and [Mn(bipy)3]−, respectively.
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