作者:Graham N. Newton、Kiyotaka Mitsumoto、Rong-Jia Wei、Fumichika Iijima、Takuya Shiga、Hiroyuki Nishikawa、Hiroki Oshio
DOI:10.1002/anie.201309374
日期:2014.3.10
ligand was used to stabilize a macrocyclic [FeIII8CoII6] cluster. Tuning the basicity of the ligand by derivatization with one or two methoxy groups led to the isolation of a homologous [FeIII8CoII6] species and a [FeIII6FeII2CoIII2CoII2] complex, respectively. Lowering the reaction temperatures allowed isolation of [FeIII6FeII2CoIII2CoII2] clusters with all three ligands. Temperature‐dependent absorption
庞大的双齿配体用于稳定大环[Fe III 8 Co II 6 ]团簇。通过用一个或两个甲氧基衍生化来调节配体的碱性,分别导致分离出同源的[Fe III 8 Co II 6 ]和[Fe III 6 Fe II 2 Co III 2 Co II 2 ]配合物。降低反应温度可以分离[Fe III 6 Fe II 2 Co III 2 Co II 2]与所有三个配体簇集。与温度相关的吸收数据和铁/镍体系的相应实验表明,铁/钴的自组装过程是由溶液状态电子转移耦合自旋跃迁(ETCST)的发生及其对反应中间不稳定性的影响所决定的。