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Two synthetic models of the active site of [FeFe]‐hydrogenase containing mixed (S, Se) and (S, Te) bridges have been synthesized and characterized. These complexes [Fe2(CO)6{μ‐S(CH2)4E‐μ)}] (E = Se (1), Te (2)) are obtained in moderate yields from the reaction of Fe3(CO)12 with 1,2‐thiaselenane or 1,2‐thiatellurane. They have been characterized by spectroscopic techniques (IR, 1H‐, 13C{1H}‐, 77Se{...
Models of [FeFe]‐hydrogenases containing diselenolato ligands with different bridge linker length have been prepared: Fe2(μ‐Se(CH2)4Se‐μ)(CO)6 (4DS), and Fe2(μ‐Se(CH2)5Se‐μ)(CO)6 (5DS) as well as dithiolato Fe2(μ‐S(CH2)4S‐μ)(CO)6 (4DT) and compared with Fe2(μ‐S(CH2)3S‐μ)(CO)6 (PDT) and Fe2(μ‐Se(CH2)3Se‐μ)(CO)6 (PDS). Compounds 4DT, PDS, 4DS, and 5DS were characterized by spectroscopic techniques including...
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