Electrochemical Proton Reductions Catalyzed by the Simpler Hexacoordinate Iron Compounds as Functional Mimics of the Active Site in [FeFe] Hydrogenase

Ligand-substitution reaction of [( μ -S 2 C 4 N 2 H 2 )Fe 2 (CO) 6 ] ( 1 ) generated a normal mono-substituted diiron dithiolate derivative [( μ -S 2 C 4 N 2 H 2 )Fe 2 (CO) 5 (PMe 3 )] ( 1P ) and a simpler hexacoordinate mononuclear compound [( μ -S 2 C 4 N 2 H 2 )Fe([CO) 2 (PMe 3 ) 2 ] ( 2 ) via di...

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