,和的σ-烯复合物,和
Ian M Riddlestone1, Siân Edmonds, Paul A Kaufman
1Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
Journal of the American Chemical Society
|January 28, 2012
概括
合成了具有-键的新有机金属复合物. 这些复合物,包括,和碎片,作为有效的西格玛捐赠者,表现出强大的结合能.
科学领域:
- 有机金属化学 有机金属化学
- 无机化学 无机化学
- 协调化学 协调化学
背景情况:
- 化是合成中的多功能试剂.
- 金属-连接体结合对于理解反应性至关重要.
- 有机金属复合体具有独特的电子和硬质性质.
研究的目的:
- 为了合成新的有机金属烯复合物.
- 为了研究阿兰联体的结合模式.
- 为了比较阿兰和二联体的结合强度.
主要方法:
- 光溶性连接体移位反应.
- 盐转化反应.盐转化反应.
- 谱学表征 (NMR,IR). 谱学表征 (NMR,IR). 谱学表征 (NMR,IR). 谱学表征 (NMR,IR). 谱学表征 (NMR,IR). 谱学表征 (NMR,IR). 谱学表征 (NMR,IR). 谱学表征 (NMR,IR). 谱学表征 (NMR,IR).
- 一个X射线晶体学.
- 量子化学计算 (DFT). 量子化学计算 (DFT). 量子化学计算 (DFT). 量子化学计算 (DFT). 量子化学计算 (DFT). 量子化学计算 (DFT). 量子化学计算 (DFT). 量子化学计算 (DFT). 量子化学计算 (DFT). 量子化学计算 (DFT).
主要成果:
- 合成 κ(1) σ-阿兰复合体与[W(CO) 5]和[Cp'Mn(CO) 2]片段.
- 一个相关的 κ(2) 烯复合物的合成与一个[Cr(CO) 4]片段.
- 谱学和晶体学数据证实了作为σ-捐赠体的阿兰配体.
- 量子化学计算显示,结合能量略大于二复合体.
结论:
- 亚联体可以有效地 σ-捐赠到过渡金属中心.
- 合成的阿兰复合体表现出强大的金属-联结体相互作用.
- 这项工作扩大了金属烯化学和结合的范围.
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