通过光化学生成和的二复合物
Steven L Matthews1, D Michael Heinekey
1Department of Chemistry, University of Washington, 98195-1700, USA.
Journal of the American Chemical Society
|February 24, 2006
概括
使用光解合成了和的新二复合物. 这些金属碳二复合体具有中度酸度,可以通过温和的基去质子化.
科学领域:
- 有机金属化学 有机金属化学
- 摄影化学的使用.
- 协调化学 协调化学
背景情况:
- 金属碳化合物复合物是有机金属化学中的多功能前体.
- 光解是一种产生反应中间体和研究反应机制的关键技术.
- 二复合物代表了一类重要的化合物,具有独特的结合特性.
研究的目的:
- 合成和描述和的新型二复合物.
- 为了研究素连接体对二复合体形成的影响.
- 为了探索合成的二复合物的反应性和酸度.
主要方法:
- 在低温光解M(CO) 6 (M=Cr,W) 在气的存在下.
- 使用NMR光谱 (1H, 31P) 进行表征,并分析T1值和合常量.
- 研究溶剂对复合物形成和反应性的影响.
主要成果:
- 成功合成了Cr (CO) 5 (H2) 和W (CO) 5 (H2) 二复合体.
- 用素替代二复合物的制备和表征,这些复合物包括 cis-PMe3) Cr) CO) 4 H2) 和 trans-PMe3) Cr) CO) 4 H2).
- 在协调溶剂中观察竞争性溶剂结合,如甲基化,这种溶剂在中不存在.
结论:
- 和的二复合物可以通过光解有效地合成.
- 这些复合物的形成受到溶剂协调能力的影响.
- 合成的二复合物呈现中度酸度,允许通过温和的基去.
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