An Unexpected By-Product in the Friedel–Crafts Acrylation of Ferrocene
摘要:
The structure of an unsaturated [3]ferrocenophane derivative, 1,1'-(1-ferrocenyl-1,3-propenediyl)ferrocene, [Fe-2(C5H5)(C18H15)], has been determined. Because of the double bond, the three-carbon bridge and the directly attached C atoms are essentially coplanar. Strain in the bridged structure is manifested in a ring-tilt angle of 12.30 and in opening of the angles in the bridge.