一个 (((V) 复合物的一个和两个电子的活性与一个氧化还原活性的tris (((amido) 连接体
Andy I Nguyen1, Karen J Blackmore, Shawn M Carter
1Department of Chemistry, University of California, Irvine, California 92697, USA.
Journal of the American Chemical Society
|February 18, 2009
概括
一个新的氧化还原活性连接体平台使复合体具有独特的反应性. 这项研究详细介绍了具有可调节电子特性和多种反应途径的新 (V) 复合物的合成和表征.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 连接体设计 连接体设计
背景情况:
- 复合物在催化和材料科学中非常有价值.
- 反氧活性联结体可以为金属中心赋予独特的电子特性.
- 开发新的连接体平台对于扩展有机金属化学至关重要.
研究的目的:
- 合成和表征一种新的氧化还原活性三胺联体平台.
- 探索这个连接体与的协调化学作用 (V).
- 为了研究由此产生的复合物的氧化还原行为和反应性.
主要方法:
- 多步骤有机合成用于配合剂制备.
- 对 ((V) 前体的连接体的协调.
- 光谱表征 (EPR) 和电化学研究 (循环电压测量).
- 与各种试剂进行反应,以探索反应性.
主要成果:
- 成功合成了 bis(2-isopropylamino-4-methoxyphenylamine) ([NNN(cat) ](3-)) 连接物.
- 形成五坐标 ([NNN(cat) ]TaCl ((2)) 和六坐标 ([NNN(cat) ]TaCl ((2) ((CN ((t) Bu)) 复合物.
- 证明了连接体中的单电子氧化还原活性,导致了基质物种.
- 对两电子反应的观察,形成的imido和hydrazido复合体.
结论:
- 新的氧化还原活性连接体平台可访问多种 (V) 复合物.
- 配体的氧化还原活性使可调节的电子特性和新的反应途径成为可能.
- 这些发现扩大了化学的范围,并为新的应用提供了潜力.
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