含有Fe (CO) 5合体的异金属银铁复合体
Guocang Wang1, Yavuz S Ceylan2, Thomas R Cundari2
1Department of Chemistry and Biochemistry, The University of Texas at Arlington , Arlington, Texas 76019, United States.
Journal of the American Chemical Society
|September 29, 2017
概括
铁(0) 五基作为连接体,形成新的异金属银-Fe(CO) 5复合体. 这些研究揭示了Ag-Fe键的性质及其在协调化学中的操纵.
科学领域:
- 有机金属化学
- 协调化学
- 无机化学
背景情况:
- 铁 ((0) 五乙烯 (Fe ((CO) 5) 是一个众所周知的有机金属化合物.
- 通常,Fe ((CO) 5) 经历与各种配体的碳酸位移反应.
- 这项研究探讨了Fe ((CO) 5) 作为配体本身的不太常见作用.
研究的目的:
- 为了研究铁的协调行为(0) 五乙烯作为一个配体.
- 合成和描述具有银和Fe (CO) 5的新型异金属复合物.
- 探索这些独特的金属对金属相互作用的结构,粘合和电子特性.
主要方法:
- 铁CO5与银盐的反应 (AgSbF6,Ag[B{3,5-(CF3) 2C6H3}4]).
- 不同金属和异金属物种的合成.
- 使用X射线晶体学,光谱学 (IR) 和计算分析进行表征.
主要成果:
- 在复合物中形成异金属{Ag-Fe(CO) 5}+碎片,如[μ-H2O) AgFe(CO) 5]2[SbF6]2和[B{3,5-(CF3) 2C6H3}4]AgFe(CO) 5.
- 在保持Ag-Fe键的同时操纵银的协调球.
- 铁-键距离在2.5833 ((4)) 到2.6219 ((5) Å之间,主要是电荷转移的离子.
- 蓝色转移的 ν̅(CO) 波段表示在银协调时的Fe→CO反键减少.
结论:
- 在形成Ag-Fe键时,Fe(CO) 5可以有效地作为配体.
- Ag-Fe 键的特征是静电相互作用和部分电荷转移.
- 对银的协调 (I) 显著改变了Fe (CO) 5联体的电子性质.
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