Park, P. J. D. published the artcileThe infrared spectra of pressed-disk samples in relation to molecular structure in 2,3-dibromo-2,3-dimethylbutane, Computed Properties of 594-81-0, the publication is Chemical Communications (London) (1966), 557-8, database is CAplus.
The ir spectra of 2,3-dibromo-2,3-dimethylbutane (I) were determined for mull, crystal, dilute solution, liquid at high temperatures, and mull pressed-disk samples in order to clarify discrepancies between earlier spectroscopic and dipole-moment studies. The spectra of solid mull and crystal samples were in agreement with those reported previously. When the ir and Raman spectra of the crystal form were compared, the rule of mutual exclusion was found to apply. The crystal was entirely the trans form with mol. sym. C2h. When the ir spectra of liquid I and dilute solutions were examined, addnl. weak absorption bands unreported previously were observed at 1283, 1263, 1190, 1055, 1020, 1005, 947, 925, 682, and 490 cm.-1 These were assigned to the gauche isomer. Addnl. bands appeared also in the pressed-disk spectrum of I, corresponding almost exactly in frequency to those bands assigned to the gauche compound During the preparation of the pressed-disk samples, internal rotation was concluded to have occurred, with some mols. changing from the trans to the gauche form.
Chemical Communications (London) 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, Computed Properties of 594-81-0.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary