A novel CC bond cleavage in hexacarbonyl(hexapentaene)diiron: X-ray crystal structure of a bis(µ3,η2-allenylidene)–iron complex

Abstract

Aryl-substituted hexacarbonyl(hexapentaene)diiron complexes undergo facile intramolecular CC bond cleavage on treatment with [Fe₃(CO)₁₂] to yield the corresponding bis(µ₃,η²-allenylidene)–iron complexes; the X-ray crystal structures of phenyl-substituted bis(µ₃,η²-allenylidene)–iron and related allenylidene complexes are determined.