(Also see Geometry section above for a discussion of the B-B bonding environment.)
Abstraction of halogens with two equivalents of sodium [[Tetrakis(3,5-bis(trifluoromethyl)phenyl)borate|tetrakis[3,5-bis(trifluoromethyl)phenyl]borate]] gives the dication with both boron atoms within the porphyrin plane. Two reversible reduction waves occur at reduction potentials lower than that of the free base.