一个非坐标 (((0) 复合体,具有不寻常的分子内部eta (((1) -arene协调
Steven M Reid1, Robert C Boyle, Joel T Mague
1Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, USA.
一种新型的复合物,bis(dicyanobiphenyl) palladium(0) 或 (dcpBiph) 2Pd,被合成并进行了表征. 这种低坐标的复合体在C-X键激活反应中表现出独特的结构特征和反应性.
科学领域:
- 有机金属化学 有机金属化学
- 协调化学 协调化学
- 催化剂是一种催化剂.
背景情况:
- 复合物在催化过程中至关重要.
- 低坐标的类物种具有独特的反应性.
- 双酸素联体可以稳定不寻常的协调几何形状.
研究的目的:
- 为了合成和描述一种新的低坐标复合物.
- 在固态和溶液中研究合成复合物的结构特征.
- 探索复合体在氧化添加反应中的反应性.
主要方法:
- 从 (tmeda) PdMe2和dcpBiph.iph中合成二 (dicyanobiphenyl) (palladium) 的合成
- 对于固态结构的确定,使用X射线晶体学.
- 溶液NMR光谱学以识别不同的适配体.
- 与各种烯化物 (PhX) 的反应研究.
主要成果:
- 实现了 (dcpBiph) 2Pd 的高产量合成.
- 固态结构显示了一个曲的P-Pd-P角度和eta1-arene相互作用.
- 溶液研究表明,在没有pi-arene相互作用的情况下,存在额外的适配剂.
- (dcpBiph) 2Pd 经过与 PhI,PhBr 和 PhCl 的氧化添加.
- 观察到来自双环化的一小部分产物.
结论:
- 合成的 (dcpBiph) 2Pd复合体是一种稳定,低坐标的物种.
- 该综合体在固态与溶液中表现出有趣的结构动态.
- 该复合物表现出对C-X键激活的反应性,这与催化应用有关.
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