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[(bmppy)Cu(μ-I)]2 (bmppy = 2,6-bis(1-methyl-1H-pyrazol-3-yl)pyridine): Synthesis, crystal structure and its catalytic performance for MMA polymerization.

Authors :
Ding, Hong-Ye
Cheng, Hong-Jian
Wang, Fan
Liu, De-Xian
Li, Hong-Xi
Fang, Yang-Yang
Zhao, Wei
Lang, Jian-Ping
Source :
Journal of Organometallic Chemistry. Oct2013, Vol. 741-742, p1-6. 6p.
Publication Year :
2013

Abstract

Abstract: Reaction of CuI with equimolar amount of 2,6-bis(1-methyl-1H-pyrazol-3-yl)pyridine (bmppy) in MeCN and CH2Cl2 yielded a binuclear complex [(bmppy)Cu(μ-I)]2 (1). It was characterized by elemental analysis, IR, 1H NMR and single crystal X-ray diffraction. Complex 1 possesses an iodide-bridged dimeric structure in which each Cu(I) center is tetrahedrally coordinated by two μ-I and two N atoms from one bmppy ligand. Complex 1 exhibited good catalytic performance in the polymerization of methyl methacrylate (MMA) in cyclohexanone. Even though the ratio of MMA to 1 was raised up to 1000:1 when the reaction time and temperature and the MMA concentration were fixed at 4 h and 80 °C and 3 mol/L, respectively, the polydispersity index (PDI) for the resulting PMMA is close to 1.36 and the conversion is up to 75%. In addition, the effects of solvents, reaction temperatures as well as the ratios of MMA to catalyst 1 were also investigated. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
0022328X
Volume :
741-742
Database :
Academic Search Index
Journal :
Journal of Organometallic Chemistry
Publication Type :
Academic Journal
Accession number :
89434828
Full Text :
https://doi.org/10.1016/j.jorganchem.2013.05.012