A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 15746-57-3, Name is Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), molecular formula is C20H16Cl2N4Ru. In a Article，once mentioned of 15746-57-3, Safety of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II)
This article deals with the hitherto unexplored metal complexes of deprotonated 6,12-di(pyridin-2-yl)-5,11-dihydroindolo[3,2-b]carbazole (H2L). The synthesis and structural, optical, electrochemical characterization of dimeric [{RuIII(acac)2}2(mu-L.?)]ClO4 ([1]ClO4, S=1/2), [{RuII(bpy)2}2(mu-L.?)](ClO4)3 ([2](ClO4)3, S=1/2), [{RuII(pap)2}2(mu-L2?)](ClO4)2 ([4](ClO4)2, S=0), and monomeric [(bpy)2RuII(HL?)]ClO4 ([3]ClO4, S=0), [(pap)2RuII(HL?)]ClO4 ([5]ClO4, S=0) (acac=sigma-donating acetylacetonate, bpy=moderately pi-accepting 2,2?-bipyridine, pap=strongly pi-accepting 2-phenylazopyridine) are reported. The radical and dianionic states of deprotonated L in isolated dimeric 1+/23+ and 42+, respectively, could be attributed to the varying electronic features of the ancillary (acac, bpy, and pap) ligands, as was reflected in their redox potentials. Perturbation of the energy level of the deprotonated L or HL upon coordination with {Ru(acac)2}, {Ru(bpy)2}, or {Ru(pap)2} led to the smaller energy gap in the frontier molecular orbitals (FMO), resulting in bathochromically shifted NIR absorption bands (800?2000 nm) in the accessible redox states of the complexes, which varied to some extent as a function of the ancillary ligands. Spectroelectrochemical (UV/Vis/NIR, EPR) studies along with DFT/TD-DFT calculations revealed (i) involvement of deprotonated L or HL in the oxidation processes owing to its redox non-innocent potential and (ii) metal (RuIII/RuII) or bpy/pap dominated reduction processes in 1+ or 22+/3+/42+/5+, respectively.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Safety of Cis-Dichlorobis(2,2′-bipyridine)ruthenium(II), If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 15746-57-3, in my other articles.
Reference：
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI