1000587-86-9Relevant academic research and scientific papers
Novel 2-mercaptopyridine-ruthenium complex exhibiting electrochemically induced linkage isomerization switched on/off by protolysis
Hamaguchi, Tomohiko,Ujimoto, Kikujiro,Ando, Isao
, p. 10455 - 10457 (2007)
A ruthenium complex [ruthenium bis(2,2′-bipyridine)(2- mercaptopyridine)(pyridine)](PF6)2 was crystallographically characterized from its deprotonated form and was electrochemically investigated. In the deprotonated complex, the 2-mercaptopyridine ligand coordinates to the Ru atom only by the S atom; therefore, the N atom of the 2-mercaptopyridine ligand can be protonated. In a CH3CN solution, the complex shows a reversible redox couple attributed to RuIII/II-S. The addition of a base to the CH 3CN solution of the complex gives irreversible voltammograms, implying electrochemically induced linkage isomerization between Ru II-S and RuIII-N. Analysis of the observed cyclic voltammograms gave the equilibrium and rate constants for linkage isomerization: KIINS = 1.2 × 1018, KIII NS = 0.64, kIINS = 5 × 10 s-1, kIISN = 4 × 10-17 s-1, k IIINS = 0.26 s-1, and kIII SN = 0.40 s-1.
