Electrochemical properties of robson type macrocyclic dicopper(II) complexes

Elisabete C. B. A. Alegria, Sellamuthu Anbu, Luisa M. D. R. S. Martins, Armando J. L. Pombeiro

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The redox properties of the 1,10-phenanthroline containing Robson type symmetrical macrocyclic dicopper(II) complex [Cu2L(H2O.phen)2](ClO4)2 1 (L = μ-11,23-dimethyl-3,7,15,19-tetraazatricyclo-[ 19,13,21] he p t a c o s a-1(24) , 2, 7, 9, 11, 13(26), 14, 19, 21(25), 22-decaene-25,26-diolate) and of its dicopper(II) precursor [Cu2L(H2O)2](ClO4)2 2 have been investigated by cyclic voltammetry and controlled potential electrolysis in different organic solvents. They exhibit two consecutive reversible one-electron reductions assigned to the CuIICuII → CuICuII → CuICuI cathodic processes. The results suggest that, in solution, phenanthroline does not coordinate to the metal in complex 1, but its H-bonding interaction with the water ligands can be preserved.
Original languageEnglish
Pages (from-to)201-207
Number of pages7
JournalPortugaliae Electrochimica Acta
Issue number4
Publication statusPublished - 24 Nov 2015

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