Two 3-amino-1H-pyrazol-2-ium salts containing organic anions, and an ortho-rhom-bic polymorph of 3-amino-1H-pyrazol-2-ium nitrate.

ABSTRACT: Co-crystallization from methanol of 3-amino-1H-pyrazole with 3,5-di-nitro-benzoic acid produces 3-amino-1H-pyrazol-2-ium 3,5-di-nitro-benzoate monohydrate, C₃H₆N₃ ⁺·C₇H₃N₂O₆ ^-·H₂O, (I), while similar co-crystallization of this pyrazole with an equimolar qu-antity of fumaric acid produces bis-(3-amino-1H-pyrazol-2-ium) fumarate-fumaric acid (1/1), 2C₃H₆N₃ ⁺·C₄H₂O₄ ^2-·C₄H₄O₄, (II). The reaction of 3-amino-1H-pyrazole with a dilute solution of nitric acid in methanol yields a second, ortho-rhom-bic polymorph of 3-amino-1H-pyrazol-2

SUBMITTER: Archana SD 

PROVIDER: S-EPMC7784047 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature