Photochemical reaction pathways of ruthenium(II) complexes. III. Metal-to-ligand charge-transfer excitation of the pentaamminepyridineruthenium(II) cation and related species

Electron transfer triggered sulfoxide isomerization in ruthenium and osmium complexes

“…Naturally, this prompted the determination of the quantum yields of isomerization (Φ S→O ) for these complexes ( Table 1). The work of Ford, McMillin and others suggest that the quantum yield should be similar to those found for photosubstitution, reflecting the presumed role of the LF states in this process [34][35][36][37]47]. For [Ru(tpy)(bpy)(dmso)] 2+ , Φ S→O = 0.024(±0.02) in propylene carbonate.…”

The macrocyclic effect and vasodilation response based on the photoinduced nitric oxide release from trans-[RuCl(tetraazamacrocycle)NO]2+

“…The extrapolated spectroscopic quantum yield at t = 0 was taken as U NO for the photoaquation of NO from trans-[RuCl(cyclam)NO] 2+ . Evaluation of U NO at t = 0 eliminates possible complications resulting from secondary photolysis of primary reaction products and inner filter effects [39][40][41].…”

Nitrosyl ruthenium complex as nitric oxide delivery agent: synthesis, characterization and photochemical properties

“…The extrapolated spectroscopic quantum yield at t ¼ 0 was taken as U NO for the photoaquation of NO from trans-[RuCl( [15]aneN 4 )NO] 2þ . Evaluation of U NO at t ¼ 0 eliminates possible complications resulting from secondary photolysis of primary reaction product [24][25][26] 6 was added and which resulted in the precipitation of a yellowish orange solid, which was filtered off and washed with a small volume of methanol and ether. The purity of the complex was confirmed by comparing its electronic absorption spectrum with published data for trans-[RuCl 2 ([15]aneN 4 )] þ [16].…”