A new sandwich-type {Co₆}-added polyoxotungstate, [Co(dien)₂]{[Co(dien)(H₂O)]₂[Co(dien)]2[Co₆(en)₂(μ₃-OH)₂(H₂O)₆(GeW₈O₃₁)₂]}·5.5H₂O (1), where dien=diethylenetriamine and en=ethylenediamine, was synthesized via hydrothermal reaction. The polyoxoanion of compound 1 was constructed by a belt-like {Co₆} cluster core sandwiched by two {GeW₈} units. 1 was characterized by single crystal X-ray diffraction, element analysis, IR spectroscopy, powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA) experiments, respectively. The electrochemical properties of 1 were explored by the cyclic voltammetry (CV) technique, and 1 exhibited excellent electrocatalytic activity in nitrite reduction.

近年来，将手性八面体金属配合物用于不对称催化引起科学家们的广泛关注。手性八面体金属配合物根据配体是否具有手性可划分为手性仅来源于金属中心及手性来源于手性配体和金属中心的八面体金属配合物。本文介绍并归纳了手性环金属铱(Ir)和钌(Ru)配合物的设计与合成方法，即通过改变金属中心、配体的结合以及配体构型等对其进行调控。随后详细阐述了其在不对称催化中的应用，并根据催化方式不同将应用分为金属配位催化和配体球调控催化。金属配位催化包括多种有机不对称催化，以及可见光诱导多功能催化剂协同不对称催化。配体球调控催化主要用于烯烃加成反应。最后对手性八面体配合物作为配位超分子的建筑单元及其在不对称催化中的应用进行了展望，将二者优势结合有望实现更广泛的应用前景。