I found the field of Chemistry very interesting. Saw the article Isoprene Polymerization with Pyrazolylimine Cobalt(II) Complexes: Manipulation of 3,4-Selectivities by Ligand Design and Use of Triphenylphosphine published in 2019.0. Product Details of 67-51-6, Reprint Addresses Liu, H; Hu, YM; Zhang, XQ (corresponding author), Chinese Acad Sci, Changchun Inst Appl Chem, CAS Key Lab High Performance Synthet Rubber & Its, 5625 Renmin St, Changchun 130022, Jilin, Peoples R China.. The CAS is 67-51-6. Through research, I have a further understanding and discovery of 3,5-Dimethyl-1H-pyrazole
A series of pyrazolylimine CoCl2 complexes were synthesized and well characterized. The single crystal structures and coordination geometries of these complexes were confirmed by X-ray diffraction, which revealed dimeric and monomeric structures, and thereby distorted trigonal bipyramidal and distorted tetrahedral geometries, respectively. In combination with diethylaluminum chloride (DEAC) and methylaluminoxane (MAO) as cocatalysts, the present cobalt complexes displayed high activity toward isoprene polymerization, affording cis-1,4/3,4-polyisoprenes. Polymerization parameters have significant influence on the polymerization behavior. Additionally, incorporation of the external donor triphenylphosphine led to a switch in selectivity of the system from cis-1,4 to 3,4, providing an effective method to adjust the 3,4-moieties on a large scale.
Product Details of 67-51-6. Welcome to talk about 67-51-6, If you have any questions, you can contact Fang, L; Zhao, WP; Han, C; Liu, H; Hu, YM; Zhang, XQ or send Email.
Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics