the sky: 1,2‐bis(ferrocenyl)distibene and 1,2‐bis(ferrocenyl)dibismuthene derivatives, where two bulky ferrocenylunits are bridged by a SbSb and BiBiπspacer, have been synthesized as a new family of novel d–π conjugated systems. Their molecular structures, spectroscopic behavior, and electrochemical properties reveal the SbSb and BiBiunits to be effective π‐electron spacers.
The bromination reaction of the stable bis(ferrocenyl)dibismuthene, Fc*Bi=BiFc* (1, Fc* = 2,5-bis(3,5-di-t-butylphenyl)ferrocenyl), with 0.5 equiv of BiBr3 resulted in the formation of the first stable1,2-dibromodibismuthanederivative, Fc*(Br)Bi–Bi(Br)Fc* (3). The structure of 3 was revealed by X-ray crystallographic analysis, showing its unique structure with the bromine atom intramolecularly coordinating