Preparation, structures and electrochemical property of diiron dithiolate complexes with hydrophilic N-donor ligands

Electrochemical catalysis investigation into the dynamic coordination properties of a pyridine-substituted [2Fe2S] model complex

“…The angle of Fe(1)-Fe(2)-N(1) in complex 1 is much higher than that complex (μ-pdt)Fe2(CO)5Py [7]. Accordingly, the basal coordination environment of pyridine on the Fe atoms is different from the complex (μ-pdt)Fe2(CO)5Py and indicates the stronger π-back-donation from the Fe center to the N [11].…”

Synthesis, Characterization and Electrochemical Studies of bis(Monothiolato) {FeFe} Complexes [Fe2(μ‐SC6H4‐OMe‐m)2(CO)5L] (L = CO, PCy3, PPh3)

“…For complex 1 , the first step is possibly reduction (cathodically shifted first catalytic peak, i. e ., reduction at a higher reduction potential than the neutral complex) while for the phosphine substituted complexes ( 2 , 3 ), the first step is protonation (anodically shifted first catalytic peak, i. e ., reduction at a lower reduction potential than the neutral complex) (Table 2). [122] Hence, an ECEC mechanism can be proposed for complex 1 while a CECE mechanism is plausible for complexes 2 and 3 [77,108,122–125] . Moreover, the independence of catalytic current after certain amounts of acid addition suggests that hydrogen elimination is the rate determining step [126–128] …”

“…[122] Hence, an ECEC mechanism can be proposed for complex 1 while a CECE mechanism is plausible for complexes 2 and 3. [77,108,[122][123][124][125] Moreover, the independence of catalytic current after certain amounts of acid addition suggests that hydrogen elimination is the rate determining step. [126][127][128]…”

Synthesis, characterization, and electrochemistry of monophosphine‐containing diiron propane‐1,2‐dithiolate complexes related to the active site of [FeFe]‐hydrogenases

“…Some hexacarbonyl complexes such as [Fe 2 (CO) 6 (μ‐SCH 2 CH 2 CH 2 S)], [Fe 2 (CO) 6 {μ‐SCH 2 N(R)CH 2 S}], [Fe 2 (CO) 6 {μ‐SCH 2 CH(CH 2 CH 3 )S}], and [Fe 2 (CO) 6 {μ‐SCH (CH 3 )CH (CH 3 )S}] were prepared as the starting materials for the further reactions. Moreover, CO substitution of the hexacarbonyl complexes with cyanides, phosphines, thioethers, pyridines, or N ‐heterocyclic carbenes produced numerous analogs to mimic the ligands in the diiron subsite of the active site of [FeFe]‐hydrogenases. Rauchfuss et al and Darensbourg et al have developed some models for the electrocatalytic production of H 2 in the presence of an acid.…”