1,4,8,11-tetraazacyclotetradecane based Ni(II); tetraethylammonium p-toluenesulfonate in N,N-dimethyl-formamide T=60°C; Electrolysis;

Ni(tet a)(ClO4)2; tetraethylammonium p-toluenesulfonate; bis-diphenylphosphine in N,N-dimethyl-formamide T=60°C; Electrolysis;