thumb|Structure of Rh(C<sub>8</sub>H<sub>12</sub>)(η<sup>6</sup>-C<sub>5</sub>H<sub>5</sub>BH).
Boratabenzene, sometimes called borinate, is the heteroaromatic anion with the formula [C<sub>5</sub>H<sub>5</sub>BH]<sup>−</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>−</sup>-N<sup>+</sup>C<sub>5</sub>H<sub>5</sub>.
See also
- borabenzene, silabenzene, germabenzene, stannabenzene, pyridine, phosphorine, arsabenzene, bismabenzene, pyrylium, thiopyrylium, selenopyrylium, telluropyrylium
- Borazine