HPLC of Formula: 14898-67-0. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Ruthenium(III) chloride xhydrate, is researched, Molecular Cl3H2ORu, CAS is 14898-67-0, about Controlling the direction of intercomponent energy transfer by appropriate placement of metals in long-lived trinuclear complexes of Fe(II), Ru(II), and Os(II). Author is Paul, Animesh; Ganguly, Tanusree; Bar, Manoranjan; Baitalik, Sujoy.
In this work, we report the synthesis, photophysics, and electrochem. of a new array of trinuclear complexes, [(bpy)2Os(d-HIm-t)M(t-HIm-d)Os(bpy)2]6+ (M = FeII, RuII, and OsII), based on a previously reported bipyridine-terpyridine type bridge (d-HIm-t). Photophys. behavior of in situ generated trinuclear OsZnOs complex {[(bpy)2Os(d-HIm-t)Zn(t-HIm-d)Os(bpy)2]6+} was also investigated to understand the complicated photophysics of trinuclear array. Complexes display very rich redox properties demonstrating multiple metal-based oxidation and ligand-based reduction couples. The triads exhibit strong absorption throughout the entire UV-vis spectral region and also emit in the near-IR domain (NIR) with a sufficiently long lifetime at ambient temperature Intercomponent energy transfer, either from the periphery to the center or from the center to the periphery, depending upon the relative position of metals, was convincingly demonstrated through steady-state emission and lifetime measurements of the triads together with resp. model complexes. Interestingly, Fe2+ does not worsen the emission behavior of the OsFeOs system to a great extent. Present trinuclear complexes act as a visible light absorbing antenna by funneling the absorbed light to the subunit(s) with the lowest energy excited state. An array of trinuclear complexes of the type OsMOs (M = FeII, RuII, and OsII) is designed in this work where the direction of the photoinduced intercomponent energy transfer is switched between the periphery to the center or from the center to the periphery by appropriate placement of the metals. Importantly, Fe2+ does not adversely deteriorate RT luminescence characteristics of OsFeOs triad and yields a long-lived excited state which makes the complex useful as an effective visible light photosensitizer.
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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”