An understanding of methods to control the structure of self‐assembled architectures is central to the efforts of chemists interested in self‐assembly synthesis. Metal ions with square planar geometry are a favorite of metallosupramolecular chemists, as there are only a limited number of possible ligand arrangements around the metal ion. Two such arrangements, firstly four monodentate donor sites ( 1,1,1,1 ), and secondly two monodentate donors and one bidentate donor ( 1,1,2 ) exemplify the symmetry interaction and ligand directed approaches, respectively. Symmetry interaction approaches using two bidentate sites ( 2,2 ) or a monodentate and tridentate site ( 1,3 ) have not received the same level of attention. In these arrangements, two complementary sites combine at the metal ion(s). This review seeks to detail strategies employed to direct structure in systems with these arrangements, and is illustrated with key exemplars from the field.

中文翻译：

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使用互补配体密度指导具有正方形平面几何形状的金属离子的金属超分子结构

对控制自组装体系结构的方法的理解对于对自组装合成感兴趣的化学家的工作至关重要。具有方形平面几何形状的金属离子是金属超分子化学家的最爱，因为在金属离子周围只有有限数量的可能配体排列。两种这样的布置，首先是四个单齿供体位点（1,1,1,1），其次是两个单齿供体和一个双齿供体（1,1,2），分别例证了对称相互作用和配体定向方法。使用两个双齿位点（2,2）或单齿和三齿位点（1,3）的对称相互作用方法没有得到相同程度的关注。在这些布置中，两个互补位在金属离子处结合。