Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
GIR MIOMeT-IU Cinquima-Química Inorgánica Facultad de Ciencias, Universidad de Valladolid, Campus Miguel, Delibes, 47011, Valladolid, Spain.
Chemistry. 2019 Nov 4;25(61):14003-14009. doi: 10.1002/chem.201903498. Epub 2019 Oct 9.
The systematic assembly of supramolecular arrangements is a persistent challenge in modern coordination chemistry, especially where further aspects of complexity are concerned, as in the case of large molecular mixed-metal arrangements. One targeted approach to such heterometallic complexes is to engineer metal-based donor ligands of the correct geometry to build 3D arrangements upon coordination to other metals. This simple idea has, however, only rarely been applied to main group metal-based ligand systems. Here, we show that the new, bench-stable tris(3-pyridyl)stannane ligand PhSn(3-Py) (3-Py=3-pyridyl) provides simple access to a range of heterometallic Sn /transition metal complexes, and that the presence of weakly coordinating counter anions can be used to build discrete molecular arrangements involving anion encapsulation. This work therefore provides a building strategy in this area, which parallels that of supramolecular transition metal chemistry.
超分子结构的系统组装是现代配位化学中的一个持续挑战，特别是在涉及到更大的分子混合金属结构的复杂方面。对于这种杂金属配合物的一种有针对性的方法是设计具有正确几何形状的基于金属的供体配体，以在与其他金属配位时构建 3D 结构。然而，这个简单的想法很少应用于主族金属基配体系统。在这里，我们表明，新型的、稳定的三（3-吡啶基）锡烷配体 PhSn(3-Py)（3-Py=3-吡啶基）为一系列杂金属 Sn/过渡金属配合物提供了简单的途径，并且可以使用弱配位抗衡阴离子来构建涉及阴离子包封的离散分子结构。因此，这项工作提供了该领域的一种构建策略，与超分子过渡金属化学的构建策略相似。
