# IUPAC name of C₆(CH₃)₆²⁺

What is the correct IUPAC name (or least incorrect one, if the current rules can't precisely describe that) of the interesting species $\ce{[C6(CH3)6]^{2+}}$ (which is extensively discussed here), containing exotic hexacoordinate pyramidal carbocation* ?

The structure can be drawn as

or

*) Some structures in the Wikipedia article have the two positive charges placed into the cyclopentadienyl (aromatic) ring, which I think is incorrect.

• Rather preferred (PIN) or one of various others (general etc.) then (in)correct. – Mithoron Jul 29 '18 at 17:59
• This article on Wikipedia is based on stuff that was published 40 or more years ago :( There has to be 2+ formal charge on apical carbon, but not real charge. – Mithoron Jul 29 '18 at 18:13
• @Mithoron .. and the "least incorrect" variant request was for the case if the current rules are incapable of that.. my question rewording edit covers that as well, sort of. I think organic nomenclature cannot handle this, and inorganic nomenclature does not have PINs. – mykhal Jul 29 '18 at 20:24