Koide, Tsutomu published the artcileDielectric study of solid 2,3-dibromo-2,3-dimethylbutane, Formula: C6H12Br2, the publication is Nippon Kagaku Zasshi (1970), 91(7), 622-5, database is CAplus.
The dielec. constant (D) of a crystal of 2,3-dibromo-2,3-dimethyl-butane was measured at 5-100 kHz at -170 to 100°. The measurements were made with an a.c. bridge. The sample was made by pressing crystal powder. The compactness was 0.98. No significant change of D was found at the transition point of -90°, while remarkable change was observed at another transition point of 70-80°. At -90 to 70°, D was ∼2.6. The theoretical value of D was calculated by the equation of Froelich, the result of which showed that the trans model was more favorable than the model of trans-gauche equilibrium
Nippon Kagaku Zasshi 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