New J. Chem.

New Journal of Chemistry

Osmapentalyne and Osmapentalene Complexes Containing Boron Monofluoride Ligands: Structure, Bonding and Adaptive Aromaticity

Osmapentalyne and osmapentalene complexes, now termed as carbolong species, have attracted considerable attention due to their novel structures, reactivities, chelating properties as well as Möbius and adaptive aromaticity. On the other hand, boron monofluoride (BF), a 10-electron diatomic molecule isoelectronic to carbon monoxide (CO), is unstable below 1800°C in the gas phase, and preparation of its metal complex is particularly challenging.