Housecroft Catherine E, Constable Edwin C
Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel. Email:
Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel.
Chimia (Aarau). 2019 Jul 26;73(6):462-467. doi: 10.2533/chimia.2019.462.
We overview the coordination chemistry of ditopic and tetratopic ligands with 4,2':6',4''-terpyridine metal-binding domains and illustrate the adaptability of these divergent ligands as building blocks in 2D- and 3D-coordination networks. The ditopic ligands we discuss are limited to roles as linkers in coordination assemblies, while the tetratopic ligands have the potential to be 4-connecting nodes. Both di- and tetratopic ligands are equipped with functionalities, typically alkyloxy chains, the nature of which has a profound effect upon the coordination assembly. Combinations of 4-connecting ligand nodes with metal-linkers lead to both 2D- and 3D-networks, while combinations of 4-connecting metal and ligand nodes give 3D-architectures. We also demonstrate constraint of the coordination assembly to 2-dimensions by depositing ditopic 4,2':6',4"-terpyridine ligands onto Au(111) or Cu(111) platforms with Cu adatoms in the former case; highly ordered ladder assemblies result which are independent of solvent molecules or anions.
我们概述了具有4,2':6',4''-三联吡啶金属结合域的双齿和四齿配体的配位化学，并说明了这些不同配体作为二维和三维配位网络构建块的适应性。我们讨论的双齿配体仅限于在配位组装中作为连接体的作用，而四齿配体有可能成为四连接节点。双齿和四齿配体都带有官能团，通常是烷氧基链，其性质对配位组装有深远影响。四连接配体节点与金属连接体的组合会产生二维和三维网络，而四连接金属和配体节点的组合则会形成三维结构。我们还通过将双齿4,2':6',4''-三联吡啶配体沉积到Au(111)或Cu(111)平台上（在前一种情况下带有Cu吸附原子），证明了配位组装对二维的限制；形成了高度有序的梯形组装体，其与溶剂分子或阴离子无关。
