 The pyramidal structure having an apex carbon bonding to six other carbon atoms was confirmed by X-ray crystallographic analysis of the hexafluoroantimonate salt published in 2016.Computational organic chemist Steven Bachrach discussed the dication, noting that the weak bonds forming the upright edges of the pyramid, shown as dashed lines in the structure he drew, have a Wiberg bond order of about 0.54; it follows that the total bond order for the apical carbon is 5 × 0.54 + 1 = 3.7  From the perspective of organometallic chemistry, the species can be viewed as having a carbon(IV) centre () bound to an aromatic anion (six-electron donor) and a methyl anion (two-electron donor), thereby satisfying the octet rule and being analogous to the gas-phase organozinc monomer which has the same ligands bound to a zinc(II) centre () and satisfies the 18 electron rule on the metal.Thus, while unprecedented, and having attracted comment in "Chemical & Engineering News", "New Scientist", "Science News", and ZME Science, the structure is consistent with the usual bonding rules of chemistry.