Kahovec, L. published the artcileRaman effect. CXVII. Rotation isomerism. 9. Polyhaloalkanes, Recommanded Product: 2,3-Dibromo-2,3-dimethylbutane, the publication is Z. physik. Chem. (1940), 48-54, database is CAplus.
Results were obtained for Me2CX2, X = Br, I; MeCHXCH2X, X = Cl, Br; ICH2CH2CH2I; MeCHI2; BrCH2CHBr2; MeCH2CHMe2; XMe2CCMe2X, X = Cl, Br. Increase in the number of frequencies around 800 cm.-1 in the series of dihalopropanes and for the CX valence vibrations in the trihaloethanes is attributed to rotation isomerism.
Z. physik. Chem. 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, Recommanded Product: 2,3-Dibromo-2,3-dimethylbutane.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary