Ferrocenyl ligands in mixed valence high-oxidation state rhenium complexes

The reactions of the ferrocenyl ligands dppf and dfed with [ReO(PPh3)2Cl3] afforded the complexes [ReO(dppf-P,P′)Cl3] (1), which has a cis–fac arrangement of ligands, and [ReO2(dfed-N,N′)2]+ (3) (dppf=1,1′-bis(diphenylphosphino)ferrocene and dfed=bis(N,N′-ferrocenylmethyl)ethylenediamine). In wet ether, 1 converts into [ReO(dppf-P,P′)(OH)Cl2] (2). Crystal structure determinations were performed on 1 and the tetraphenylborate salt of 3. Compound 1 crystallizes in the orthorhombic system, space group P212121 with a=11.5364(2), b=15.8381(4) and c=17.5050(4) Å and 3 crystallizes in the orthorhombic system, space group Aba2 with a=15.3773(8), b=15.1344(7) and c=28.2817(14) Å.