The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Heat capacities and thermodynamic properties of globular molecules. XIII. Transition and fusion of pentaerythrityl chloride and bromide, transition of pentaerythrityl iodide》. Authors are Clever, H. Lawrence; Wong, Wen-Kuei; Westrum, Edgar F. Jr..The article about the compound:Pentaerythrityltetrabromidecas:3229-00-3,SMILESS:BrCC(CBr)(CBr)CBr).Reference of Pentaerythrityltetrabromide. Through the article, more information about this compound (cas:3229-00-3) is conveyed.
cf. CA 61, 6467h. The heat capacities of crystalline pentaerythrityl iodide and of crystalline and liquid pentaerythrityl chloride and bromide above 290°K. were determined by adiabatic calorimetry. The high entropies of fusion, 14.45 and 15.42 cal./mole degree found for pentaerythrityl chloride and bromide, resp., indicate that these halides have no plastic crystal phase at atm. pressure. At temperatures corresponding to the same fraction of their resp. m.ps. all 3 compounds show broad λ-anomalies in their heat capacity curves. These involve excess entropies of <1 cal./mole degree. From this literature《Heat capacities and thermodynamic properties of globular molecules. XIII. Transition and fusion of pentaerythrityl chloride and bromide, transition of pentaerythrityl iodide》,we know some information about this compound(3229-00-3)Reference of Pentaerythrityltetrabromide, but this is not all information, there are many literatures related to this compound(3229-00-3).
Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem