Unlike the related but highly stable benzene molecule, borabenzene would be electron-deficient.
Related derivatives are the boratabenzene anions, including the parent [C5H5BH]−.
4-Silyl-1-methoxyboracyclohexadiene is used as a precursor to the borabenzene: The pyridine adduct C5H5N-BC5H5 is structurally related to biphenyl.
[1] It is a yellow whereas biphenyl is colorless, indicating distinct electronic structures.
The borabenzene-pyridine adduct behaves like a diene, not an analog of biphenyl, and will undergo Diels-Alder reactions.