I found the field of Crystallography very interesting. Saw the article Crystal structure of dichlorido-1 kappa Cl,2 kappa Cl-(mu(2)-3,5-dimethyl-1H-pyrazolato-1 kappa N-2:2 kappa N-1)(3,5-dimethyl-1H-pyrazole-2 kappa N-2){mu-2-[(2-hydroxyethyl)amino-1 kappa N-2,O]ethanolato-1:2 kappa O-2:O}dicopper(II) published in 2020.0. SDS of cas: 67-51-6, Reprint Addresses Safarmamadov, SM (corresponding author), Tajik Natl Univ, Dept Chem, 17 Rudaki Ave, Dushanbe 734025, Tajikistan.. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole
The title compound, [Cu-2(C5H7N2)(C4H10NO2)Cl-2(C5H8N2)], is a pyrazolate aminoalcohol complex which contains two dimethylpyrazole molecules in monodentate and bidentate-bridged coordination modes and a monodeprotonated diethanolamine molecule. Both copper atoms are involved in the formation of non-planar five-membered chelate rings. One Cu atom is in a distorted tetrahedral environment formed by the pyridine nitrogen atom of the protonated dimethylpyrazole molecule, the N atom of the deprotonated bridged dimethylpyrazole, the Cl atom and the bridged O atom of the monodeprotonated diethanolamine. The second Cu atom has an intermediate environment between trigonal bipyramidal and square pyramidal, formed by the N atom of the deprotonated bridged dimethylpyrazole, the Cl atom and the N atom of the aminoalcohol, and two O atoms of the deprotonated and protonated OH groups. In the crystal, N-H center dot center dot center dot Cl hydrogen bonds link the molecules into antisymmetric chains running along the a-axis direction. Adjacent chains are connected by O-H center dot center dot center dot O hydrogen bonds involving the hydroxyl group as donor.
SDS of cas: 67-51-6. About 3,5-Dimethyl-1H-pyrazole, If you have any questions, you can contact Vynohradov, OS; Pavlenko, VA; Safyanova, IS; Znovjyak, K; Shova, S; Safarmamadov, SM or concate me.
Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics