Study of the spectroscopic and electrochemical properties of tetraruthenated porphyrins by theoretical-experimental approach - Mayer, Ildemar; Formiga, André Luiz Barboza; Engelmann, Fábio Monaro; Winnischofer, Herbert; Oliveira, Pedro Vitoriano de; Tomazela, Daniela Maria; Eberlin, Marcos Nogueira; Toma, Henrique Eisi; Araki, Koiti (Inorganica Chimica Acta, 2005)