(a)
(b)
(c)
Figure 5: EPR spectra of [RuCl3(hqn)NO] (a), [RuCl3(2mqn)NO] (b), and [RuCl3(2cqn)NO] (c) complexes (1: control, without photoirradiation; 2: 15 s; 3: 30 s; 4: 5 min).