Preparation and characterization of 1,1′-diphosphaferrocenes with linearly fused six-membered carbocycles

Zirconacyclopentadiene-mediated homologation method was applied to preparation of a couple of 1,1′-diphosphaferrocene derivatives with linearly fused six-membered carbocycles. The solid-state structure of bis(hexapropyldihydro-iso-naphthophospholyl)iron(II) complex (1) was studied by X-ray single-crystal structure determination.