세미나

SEMINAR

  •   >  
  • 연구동향
  •   >  
  • 세미나
세미나 KAIST 화학과 세미나
제목 Carbon oxygenate and dinitrogen activation and transformation using f-block complexes
발표자 Polly L. Arnold ( University of Edinburgh ) 날짜 2018-11-26
Host KAIST Place #3130(E6-4)
Abstract The subtleties of structure and bonding in compounds of the rare earths (Group 3 and the lanthanides) and uranium, the heaviest naturally occurring element, are still poorly-understood. However, their complexes can exhibit strong and tuneable Lewis acidity, high and tuneable reduction capacity, and the capacity for rapid ligand exchange reactions. Organometallic compounds of the lanthanides and actinides have shown many interesting small molecule activation reactions, including hydrocarbon C-H bond cleavage, over the last 25 years, and interest is increasing in their activity as catalysts, since the recognition that many rare earths are at least as abundant as iodine, and many are cheap and less toxic than iron. We will show new f-block organometallics that are capable of the reductive activation and functionalisation of CO, CO2, N2, and arenes, even using simple bulky ligands that have been previously overlooked. The dominance of single-electron redox reactivity is a potential drawback they share with the 3d metal catalysts. We will present some dinuclear f-block complexes supported by new platform ligands, and their multiple-electron redox chemistry and catalysis, with a particular focus on cerium and uranium.

이 페이지에서 제공하는 정보에 만족하십니까?