The X-ray crystal and molecular structure of 3,5-di-tert-butylpyrazole hydrochloride at 200 K

Article abstract of DOI:10.1016/0022-2860(95)08915-I

The title compound 1H,2H-3,5-di-tert-butylpyrazolium chloride (2) was prepared by reacting 1H-3,5-di-tert-butylpyrazole (1) with hydrochloric acid in methanol.The molecules of 2 are arrenged in the crystal in dimers bridged by the chlorine ion through strong and quite linear hydrogen bonds.Several surveys were performed via the Cambridge Structural Datebase searching for N⁺(sp²)-H...Cl^- interactions and for prseudo-rings in which two chlorine ions were hydrogen bonded by two water molecules, both hydrogen atoms of each molecule being involved in the contacts.