Toniolo Davide, Scopelliti Rosario, Zivkovic Ivica, Mazzanti Marinella
Insititut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
Laboratory for Quantum Magnetism, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
J Am Chem Soc. 2020 Apr 22;142(16):7301-7305. doi: 10.1021/jacs.0c01664. Epub 2020 Apr 8.
The hexanuclear [NaFe(tris-cyclo-salophen)(THF)], , and the trinuclear [NaFe(tris-cyclo-salophen)(py)], , Fe(II) clusters can be easily assembled in one step from the ligand-based reduction of the [Fe(salophen)(THF)] complex. These complexes consist of triangular cores where three Fe(II) ions are held together, within range of bonding interaction, by the hexa-amide, hexaphenolate macrocyclic ligand . The ligand is perfectly suited for binding three Fe(II) centers at short distances, allowing for strong magnetic coupling between the Fe(II) centers. The macrocyclic ligand is generated by the reductive coupling of the imino groups of three salophen ligands, resulting in three new C-C bonds. The six electrons stored in the ligand become available for the reduction of carbon dioxide with selective formation of carbonate.
六核[NaFe（三 - 环 - 水杨醛缩邻苯二胺）（THF）]，以及三核[NaFe（三 - 环 - 水杨醛缩邻苯二胺）（吡啶）]，Fe（II）簇可以通过基于配体的[Fe（水杨醛缩邻苯二胺）（THF）]配合物的还原反应一步轻松组装而成。这些配合物由三角形核心组成，其中三个Fe（II）离子通过六酰胺、六酚盐大环配体在键合相互作用范围内结合在一起。该配体非常适合在短距离内结合三个Fe（II）中心，从而实现Fe（II）中心之间的强磁耦合。大环配体是由三个水杨醛缩邻苯二胺配体的亚氨基的还原偶联产生的，形成了三个新的C - C键。配体中储存的六个电子可用于二氧化碳的还原，并选择性地形成碳酸盐。
