Diiron species containing a cyclic P Ph 2 N Ph 2 diphosphine related to the [FeFe]H 2 ases active site

International audienceA new dissymmetrically disubstituted diiron dithiolate species, [Fe2(CO)4(κ2-PPh2NPh2)(μ-pdt)] (pdt = S(CH2)3S), was prepared by using a flexible cyclic base-containing diphosphine, 1,3,5,7-tetraphenyl 1,5-diaza-3,7-diphosphacyclooctane (PPh2NPh2 = {PhPCH2NPh}2). Preliminary investigations of proton and electron transfers on the diiron system have been done