[(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

被引：13
|
作者：
Ding, Hong-Ye [1 ]
Cheng, Hong-Jian [1 ]
Wang, Fan [1 ]
Liu, De-Xian [1 ]
Li, Hong-Xi [1 ]
Fang, Yang-Yang [1 ]
Zhao, Wei [1 ]
Lang, Jian-Ping [1 ,2 ]
机构：
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China
来源：
JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2013年 / 741卷
基金：
中国国家自然科学基金;
关键词：
Cupper(I) complex; 2,6-Bis(1-methyl-1H-pyrazol-3-yl)pyridine; Structure; Catalysis; Methyl methacrylate; Polymerization; TRANSFER RADICAL POLYMERIZATION; METHYL-METHACRYLATE; COORDINATION POLYMERS; COPPER(I) COMPLEXES; LIGAND; ATRP; PRECATALYSTS; BROMIDE; DONOR; NO;
D O I：
10.1016/j.jorganchem.2013.05.012
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
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(mu-I)](2) (1). It was characterized by elemental analysis, IR, H-1 NMR and single crystal X-ray diffraction. Complex 1 possesses an iodide-bridged dimeric structure in which each Cu(l) center is tetrahedrally coordinated by two mu-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 degrees 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. (C) 2013 Elsevier B.V. All rights reserved.
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页码：1 / 6
页数：6
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