Synthesis, characterization and molecular structure of the 1- methylimidazolium carbonyl-1- methylimidazoletetrachloro -ruthenate (iii) - Batista, A A; Olmo, L R V; Oliva, Glaucius; Castellano, Eduardo Ernesto; Nascimento, Otaciro Rangel (Inorganica Chimica Acta, 1992)