Olah, George A. published the artcileStable carbonium ions. XLVIII. Halonium ion formation via neighboring halogen participation. Tetramethylethylene halonium ions, Formula: C6H12Br2, the publication is Journal of the American Chemical Society (1967), 89(18), 4744-52, database is CAplus.
cf. preceding abstracts Bridged halonium ions (e.g. I) formed on ionization of 2,3-dihalo-2,3-dimethylbutanes in SbF5-SO2 solution at -60°, when the participating halogen atom is Cl, Br, or iodine. 2,3-Difluoro-2,3-dimethylbutane, on the other hand, gave α-fluoroisopropyl-dimethylcarbonium ion in which the F atom is rapidly exchanging intramolecularly between the two equivalent sites. 2-Halo-3-acetoxy-2,3-dimethylbutanes and 2-halo-3-methoxy-2,3-dimethylbutanes also ionize in SbF5-SO2 to similar ions. Bridged acetoxonium ion formation but not bridged methoxonium ion formation accompany these ionizations. 27 references.
Journal of the American Chemical Society published new progress about 594-81-0. 594-81-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 2,3-Dibromo-2,3-dimethylbutane, and the molecular formula is C6H12Br2, Formula: C6H12Br2.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary