The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: [Ir(dtbbpy)(ppy)2]PF6(SMILESS: [F-][P+5]([F-])([F-])([F-])([F-])[F-].CC(C)(C1=CC=[N]([Ir+3]23([C-]4=CC=CC=C4C5=CC=CC=[N]25)([C-]6=CC=CC=C6C7=CC=CC=[N]37)[N]8=CC=C(C(C)(C)C)C=C98)C9=C1)C,cas:676525-77-2) is researched.Computed Properties of C7H6BrI. The article 《Large Improvement in the Catalytic Activity Due to Small Changes in the Diimine Ligands: New Mechanistic Insight into the Dirhodium(II,II) Complex-Based Photocatalytic H2 Production》 in relation to this compound, is published in Inorganic Chemistry. Let’s take a look at the latest research on this compound (cas:676525-77-2).
Two dirhodium(II) complexes, [RhII2(μ-O2CCH3)2(bpy)2](O2CCH3)2 (Rh2bpy2; bpy = 2,2′-bipyridine) and [RhII2(μ-O2CCH3)2(phen)2](O2CCH3)2 (Rh2phen2; phen = 1,10-phenanthroline) were synthesized, and their photocatalytic H2 production activities were studied in multicomponent systems, containing [IrIII(ppy)2(dtbbpy)]+ (ppy = 2-phenylpyridine, dtbbpy = 4,4′-di-tert-butyl-2,2′-bipyridine) as the photosensitizer (PS) and triethylamine as the sacrificial reductant (SR). There is a more than 6-fold increase in the photocatalytic activity from Rh2bpy2 to Rh2phen2 just using phen in place of bpy. A turnover number as high as 2622 was obtained after 50 h of irradiation of a system containing 16.7 μM Rh2phen2, 50 μM PS, and 0.6 M SR. The electrochem., luminescence quenching, and transient absorption experiments demonstrate that RhIRhI is the true catalyst for the proton reduction The real-time absorption spectra confirm that a new Rh-based species formed upon irradiation of the Rh2phen2-based multicomponent system, which exhibits an absorption centered at ∼575 nm. This 575-nm intermediate may account for the much higher H2 evolution efficiency of Rh2phen2. The authors work highlights the importance of N-based chelate ligands and opens a new avenue for pursuing more efficient RhII2-based complexes in photocatalytic H2 production application.
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Reference:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”