The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. COA of Formula: https://www.ambeed.com/products/81-48-1.html, 81-48-1, Name is 1-Hydroxy-4-(p-tolylamino)anthracene-9,10-dione, SMILES is O=C(C1=C2C=CC=C1)C3=C(NC4=CC=C(C)C=C4)C=CC(O)=C3C2=O, in an article , author is Majoumo-Mbe, Felicite, once mentioned of 81-48-1.
The title compound, C14H12N4S, was synthesized by the condensation reaction of hydralazine and 2-acetylthiophene and during the reaction, a proton transfer from the imino nitrogen atom to one of the endocylic nitrogen atoms occurred. The compound crystallizes in the monoclinic crystal system with two independent molecules (molecules 1 and 2) in the asymmetric unit. In each molecule, there is a slight difference in the orientation of the thiophene ring with respect to phthalazine ring system, molecule 1 showing a dihedral angle of 42.51 (1)degrees compared to 8.48 (1)degrees in molecule 2. This implies an r.m.s deviation of 0.428 (1) angstrom between the two molecules for the 19 non-H atoms. The two independent molecules are connected via two N-H center dot center dot center dot N hydrogen bonds, forming dimers which interact by two bifurcated pi-pi stacking interactions to build tetrameric motifs. The latter are packed in the ac plane via weak C-H center dot center dot center dot pi interactions and along the b axis via C-H center dot center dot center dot N and C-H center dot center dot center dot pi interactions. This results a three-dimensional architecture with a tilted herringbone packing mode.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 81-48-1, you can contact me at any time and look forward to more communication. COA of Formula: https://www.ambeed.com/products/81-48-1.html.
Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem