The nature of Ru–NO bonds in ruthenium tetraazamacrocycle nitrosyl complexes: a computational study - Caramori, Giovanni Finoto; Kunitz, André Guilherme; Andriani, Karla Furtado; Doro, Fábio Gorzoni; Frenking, Gernot; Tfouni, Elia (Dalton Transactions, 2012)