用于环氧/CO2共聚合的双金属合金复合物
Bun Yeoul Lee1, Heon Yong Kwon, Su Yeon Lee
1Department of Molecular Science and Technology, Ajou University, Suwon 443-749 Korea. bunyeoul@ajou.ac.kr
Journal of the American Chemical Society
|March 3, 2005
概括
来自非循环 bis (((anilido-aldimine) 连接体的新双核复合体在环氧化物/CO (((2) 共聚合过程中表现出高活性. 综合体32的活性最高,显示出高效聚合物合成的巨大潜力.
科学领域:
- 有机金属化学 有机金属化学
- 聚合催化法 聚合催化法
- 协调化学 协调化学
背景情况:
- 合成了环状o-烯桥接 bis ((anilido-aldimine) 化合物和相关的宏环结构.
- 这些配体作为新型双核复合物的前体.
研究的目的:
- 为了合成和表征双核-甲基硫酸复合物.
- 评估这些复合物在氧化环素/CO2共聚合中的催化活性.
- 为了研究连接体结构对催化性能的影响.
主要方法:
- 合成非循环 bis ((anilido-aldimine) 和宏循环化合物.
- 通过与Me(2) Zn和SO(2) 的反应形成双核-甲基硫酸复合体.
- 在稀释条件下对氧化环素/CO2共聚合物的催化评价.
- 通过X射线结晶学对34和40的复合体进行结构性表征.
主要成果:
- 通过定量获得双核-甲基硫酸复合物 (30-35).
- 复合物30-35在低度 ([Zn]/[单体]=1:5600) 时表现出高氧化/CO(2) 联合聚合的高催化活性.
- 复合体32表现出最高的活动,实现了2980的周转数和284,000的分子量,[Zn]/[单体]=1:17,400.
- 宏环类同类 (36-40) 的活性可以忽略不计.
结论:
- 亚环双核复合物是二核复合物,是CO2 /环氧化物共聚合的高度活跃的催化剂.
- 催化活性对N-aryl整形替代剂敏感,复合体32是最有效的.
- 这些发现突出了精心设计的双核复合物的潜力,用于高效和选择性的聚合物合成.
相关概念视频
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