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Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
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-终端基胺复合物

Bin Feng1, Li Xiang1, Ambre Carpentier2

  • 1State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.

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|February 11, 2021
PubMed
概括

研究人员合成了第一个稀土终端胺复合物,一种酸胺. 这种复合物表现出强烈的Sc-Pπ相互作用,并作为核友的素.

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科学领域:

  • 有机金属化学
  • 主要组化学

背景情况:

  • 在2010年报告了稀土金属终端的imido复合物.
  • 稀土金属终端胺复合物尚未合成.

研究的目的:

  • 报告第一个稀土终端素复合物的合成和结构特征.
  • 调查新复合体的电子结构和粘合特性.

主要方法:

  • 合成玻利胺复合物
  • 单晶X射线衍射用于结构分析.
  • 用于电子结构分析的密度功能理论 (DFT) 计算.

主要成果:

  • 首个稀土终端素复合物,一种基素,已成功合成和表征.
  • 与相似的复合体 (2.564(1) 相比,- (Sc-P) 键的长度显著更短 (2.381(1) Å).
  • DFT计算显示了强大的Sc-Pπ相互作用,与合体中的弱相互作用形成鲜明对比.
  • 预先的反应性研究表明该复合物具有核友的素功能.

结论:

  • 这项工作建立了第一个稀土终端素复合物.
  • 强大的Sc-Pπ相互作用是复合物的稳定性和反应性的关键.
  • 该复合体表现出核友的素行为,为新的化学转化开辟了道路.