The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《The phase transition in pentaerythritol. III》. Authors are Nitta, Isamu; Wantanabe, Tokunosuke; Seki, Shuzo; Momotani, Masanobu.The article about the compound:Pentaerythrityltetrabromidecas:3229-00-3,SMILESS:BrCC(CBr)(CBr)CBr).Recommanded Product: Pentaerythrityltetrabromide. Through the article, more information about this compound (cas:3229-00-3) is conveyed.
In the light of the exptl. information obtained from the thermal measurements and the expansion coefficients on pentaerythritol, the transition mechanism from a tetragonal to a cubic lattice is discussed. Comparison of the large entropy, 22.8 e.u., for the polymorphic transition, with the entropy of fusion 12.7 e.u., and 25.3 e.u. for tetra-bromopentaerythritol and meso-erythritol, resp. (where, in the latter case, H bonding plays an important role), suggests a difference in degree of H bonding between the tetragonal and cubic forms of pentaerythritol. From the above information and the entropy of fusion of 3.2 e.u. for pentaerythritol, a value of 13.3 e.u. is obtained for this effect. Estimation of the difference in the configurational entropy between these 2 forms to be 14.47 e.u. from statistical considerations, gives close agreement with the exptl. results.
If you want to learn more about this compound(Pentaerythrityltetrabromide)Recommanded Product: Pentaerythrityltetrabromide, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(3229-00-3).
Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem