Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 50-33-9, Name is Phenylbutazone, molecular formula is , belongs to pyrazoles-derivatives compound. In a document, author is Archana, Sreeramapura D., Formula: C19H20N2O2.
Two 3-amino-1H-pyrazol-2-ium salts containing organic anions, and an orthorhombic polymorph of 3-amino-1H-pyrazol-2-ium nitrate
Co-crystallization from methanol of 3-amino-1H-pyrazole with 3,5-dinitro-benzoic acid produces 3-amino-1H-pyrazol-2-ium 3,5-dinitrobenzoate mono-hydrate, C3H6N3+center dot C7H3N2O6-center dot H2O, (I), while similar co-crystallization of this pyrazole with an equimolar quantity of fumaric acid produces bis(3-amino-1H-pyrazol- 2-ium) fumarate-fumaric acid (1/1), 2C(3)H(6)N(3)(+)center dot C4H2O42-center dot C4H4O4, (II). The reaction of 3-amino-1H-pyrazole with a dilute solution of nitric acid in methanol yields a second, orthorhombic polymorph of 3-amino-1H-pyrazol-2-ium nitrate, C3H6N3+center dot NO3-, (III). In each of (I)-(III), the bond distances in the cation provide evidence for extensive delocalization of the positive charge. In each of (I) and (II), an extensive series of O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds links the components into complex sheets, while in the structure of (III), the ions are linked by multiple N-H center dot center dot center dot O hydrogen bonds into a threedimensional arrangement. Comparisons are made with the structures of some related compounds.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 50-33-9, in my other articles. Formula: C19H20N2O2.
Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics