(untitled) - Cadierno, V; Diez, J; Pilar Gamasa, M; Gimeno, J; Lastra, E (Coord Chem Rev, 1999)
The chemistry of ferroceno[b]chromone (3) is likely related to that of indenyl based ferrocenes wherein facile ligand slippage from η5- to η3-coordination, due to the aromaticity of the ring system fused to the Cp unit, results in instability and heightened reactivity of the metallocene. For a review of group 8 metal indenyl complexes, see: