Boratabenzene, sometimes called borinate, is the heteroaromatic anion with the formula [C<sub>5</sub>H<sub>5</sub>BH]<sup>âÂÂ</sup>.
Derivatives of boratabenzene are ligands akin to cyclopentadienyl anion. sandwich or half-sandwich type complexes of many transition metals have been reported. The 1-methyl and 1-phenyl borinates can form some of the few organo-thallium(I) compounds.
Electronically related heterocycles are adducts of the notional borabenzene. The adduct C<sub>5</sub>H<sub>5</sub>B÷pyridine exhibits properties of boratabenzene anion, i.e., it has the character C<sub>5</sub>H<sub>5</sub>B<sup>âÂÂ</sup>-N<sup>+</sup>C<sub>5</sub>H<sub>5</sub>.