chlorine dioxide in water Kinetics; in aq. soln. at 22-25°C;

in nitromethane; acetonitrile Kinetics; (Ar); mixing of Ni(tacn)(ClO4)3 with Cu(2,9-dimethyl-1,10-phenanthroline)(1+) in 1:1 v/v mixt. of acetonitrile and nitromethane at 25°C; monitoring by UV;

in acetonitrile Kinetics; (Ar); mixing of Cu(6,6'-dimethyl-2,2'-bipyridine))(2+) with Cu(2,9-dimethyl-1,10-phenanthroline)(1+) in MeCN at 25°C; monitoring by UV;

in not given large excess of Cu(dmp)2(1+), than the equilibrium is totally shifted to the right; visible spectra of reaction solution;