Starting with a coordination polymer, {[Cu(L)]₂}_n (1 where H₂L = salicylidene-2-aminophenol), we have explored the ability of polypyridyl ligands (P) to bridge the monomer complex to form nine {[Cu(L)]₂(P)} complexes. The identity and solution stability of the [Cu(L)] units has been investigated through a novel combined UV–vis/EPR experiment and it has been found to be a stable supramolecular building unit for the construction of discrete complexes and coordination polymers. The reorganization of [Cu(L)] units to a new coordination polymer on addition of 4,4′-bipyridine markedly changes the connectivity of the structure and the magnitude of the antiferromagnetic interactions through reorientation of the Cu(II) orbitals. We also present the structure of 1, 80 years after its synthesis was first reported.

中文翻译：

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太远的桥梁：测试桥联配位聚合物的可溶性亚基中的聚吡啶基配体的极限

从配位聚合物{[Cu（L）] ₂ } _n（1其中H ₂ L =水杨基-2-氨基苯酚）开始，我们探索了聚吡啶基配体（P）桥接单体络合物形成九种{ [Cu（L）] ₂（P）}络合物。[Cu（L）]单元的身份和溶液稳定性已通过新颖的UV-vis / EPR组合实验进行了研究，已发现它是用于构建离散配合物和配位聚合物的稳定的超分子建筑单元。[Cu（L）]单元通过添加4,4'-联吡啶显着改变了结构的连通性，并通过Cu（II）轨道的重新定向改变了反铁磁相互作用的强度。我们还介绍了1的结构，即首次报道其合成后的80年。