Synthesis and characterization of a novel ruthenium nitrosyl complex and studies on photolability of coordinated NO

In the present communication, we have reported the synthesis and characterization of a novel nitric oxide (NO) donating complex [Ru(L1)(PPh3)2(NO)](ClO4) (2) derived from [Ru(L1)(PPh3)2(Cl)] (1) (L1H2 is pyridine 2,6-dicarboxylic acid and H stands for dissociable proton). Characterization of by UV–Vis, IR and NMR spectral studies revealed the presence of {RuNO}6 species with S = 0 ground state. ESI-MS data also supported the formation of . Electrochemical studies on complex were investigated. The coordinated NO was found to be photolabile under visible as well as in UV light and photocleaved NO was transferred to reduced myoglobin.