Fig. 3. ESI mass spectra of a 0.2 mM aqueous solution of (a) [Ru(CYM)(p-Cl-dkt)]Cl, (b) [Ru(CYM)(pta)(p-Cl-dkt)]PF6 and (c) RAPTA-C with GSH. The spectra were acquired immediately after preparing a solution with all components. The molar ratio of the ruthenium(ii) complex to GSH was 1 : 1, 1 : 10 and 1 : 1000 as denoted in each ESI mass spectrum (right bottom).
