1449292-85-6

Basic information

• Product Name: 2-[1-(2,6-diisopropylphenylimino)ethyl]-6-(3,5-diisopropylpyrazol-1-yl)pyridine cobaltdichloride
• Synonyms: 2-[1-(2,6-diisopropylphenylimino)ethyl]-6-(3,5-diisopropylpyrazol-1-yl)pyridine cobaltdichloride
• CAS NO: 1449292-85-6
• Molecular Weight: 560.536
• Mol File: 1449292-85-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2-[1-(2,6-diisopropylphenylimino)ethyl]-6-(3,5-diisopropylpyrazol-1-yl)pyridine cobaltdichloride(CAS DataBase Reference)
• NIST Chemistry Reference: 2-[1-(2,6-diisopropylphenylimino)ethyl]-6-(3,5-diisopropylpyrazol-1-yl)pyridine cobaltdichloride(1449292-85-6)
• EPA Substance Registry System: 2-[1-(2,6-diisopropylphenylimino)ethyl]-6-(3,5-diisopropylpyrazol-1-yl)pyridine cobaltdichloride(1449292-85-6)

Safety Data

• Hazardous Substances Data: 1449292-85-6(Hazardous Substances Data)

Upstream product

• 1449292-71-0 6-(3,5-diisopropylpyrazol-1-yl)-2-acetylpyridine 
• 1449292-69-6 ethyl 6-(3,5-diisopropylpyrazol-1-yl)pyridine-2-carboxylate 
• 17536-00-4 3,5-diisopropylpyrazole 
• 21190-88-5 6-bromopyridine-2-carboxylic acid ethyl ester 
• 1449292-77-6 2-[1-(2,6-diisopropylphenylimino)ethyl]-6-(3,5-diisopropylpyrazol-1-yl)pyridine 
• 7646-79-9 cobalt(II) chloride 

Relevant articles and documents

Polymerization of 1,3-butadiene catalyzed by pincer cobalt(II) complexes derived from 2-(1-arylimino)-6-(pyrazol-1-yl)pyridine ligands

A new class of air stable and structurally well-defined cobalt complexes with unsymmetrical pincer type ligands ([2-(ArNCMe)-6-(Py)C5H 3N]CoCl2) (Ar = C6H5, Py = pyrazol-1-yl, 5a; Ar = 2,4,6-Me3C6H2, Py = pyrazol-1-yl, 5b; Ar = 2,6-iPr2C6H3, Py = pyrazol-1-yl, 5c; Ar = C6H5, Py = 3,5-Me 2pyrazol-1-yl, 5d; Ar = 2,4,6-Me3C6H 2, Py = 3,5-Me2pyrazol-1-yl, 5e; Ar = 2,6- iPr2C6H3, Py = 3,5-Me 2pyrazol-1-yl, 5f; Ar = 2,6-iPr2C 6H3, Py = 3,5-iPr2pyrazol-1-yl, 5g and [2-(OCMe)-6-(3,5-diphenylpyrazol-1-yl)C5H3N]CoCl 2 5h) were prepared and the molecular structures of 5a, 5c and 5f were determined by single crystal X-ray crystallography. Upon activation by methylaluminoxane (MAO) in toluene at room temperature, all complexes initiate polymerization of 1,3-butadiene (polymer yields: 65-99%), affording polybutadiene with excellent cis-1,4 regularity (97.5-98.7%). The polymer yields and properties in terms of molecular weight and distribution are well controlled by the substituents on iminoaryl rings and pyrazole rings. Selectivity switch from cis-1,4 to syndio-1,2 was also achievable by adding phosphine as microstructure regulator.