Electrospray ionization tandem mass spectrometry of polymetallic 'mü'-Oxo- and carboxylate-bridged ['Ru IND.3'O'(C'H.3'COO) IND.6''(Py) IND.2''(L) POT.+' complexes: intrinsic ligand (L) affinities with direct access to steric effects - Eberlin, Marcos N.; Tomazela, Daniela M.; Araki, Koiti; Alexiou, Anamaria D. P.; Formiga, André L. B.; Toma, Henrique Eisi; Nikolaou, Sofia (Organometallics, 2006)