A new tetranuclear nickel complex based on the benzimidazole ligand for the controllable polymerization of methyl methacrylate

作者：Shi Qi; Chen Leilei; Liu Dengfeng; Wu Jing; Wu Liying; Zhu Luqun; Cheng Qingqiang; Lu Rong; Fan Daidi; Lu Xingqiang^*

来源：Inorganic Chemistry Communications, 2013, 29: 22-26.

DOI：10.1016/j.inoche.2012.11.026

• Tetranuclear cationic nickel complex
• Benzimidazole-based ligand
• Controllable polymerization of methyl methacrylate
• Two active species and their interaction

The new tetranuclear [Ni-4(L)(6)Cl]center dot Cl (1) complex from the benzimidazole-based ligand HL (HL: 2-(1H-benzo[d]imidazol-2-yl)-6-methoxyohenol) was prepared and structurally characterized by EA, FT-IR and X-ray single-crystal diffraction. The tetranuclear complex 1 was shown to efficiently catalyze the controllable polymerization of methyl methacrylate (MMA) in activation with AIBN (azobisisobutyronitrile), giving the syndio-enriched atactic PMMAs. The existence of two active species in the 1/AIBN systems should be favorable for the higher catalytic activities, while the cooperative interactions between the two active centers should result in the relatively broad molecular weight distributions for the obtained PMMAs.

• 出版日期2013-3
• 单位西北大学; 西安文理学院