Exploiting the Pyrazole-Carboxylate Mixed Ligand System in the Crystal Engineering of Coordination Polymers
作者:Chris S. Hawes、Boujemaa Moubaraki、Keith S. Murray、Paul E. Kruger、David R. Turner、Stuart R. Batten
DOI:10.1021/cg501004u
日期:2014.11.5
The utility of the pyrazole-carboxylate mixed ligand system has been probed with the synthesis of five new coordination polymers, derived from bis-pyrazole ligand 4,4′-methylenebis(3,5-dimethyl-1H-pyrazole) H2L1, large semirigid dicarboxylate coligands, and the deliberately designed and synthesized ligand para-((3,5-dimethyl-1H-pyrazol-4-yl)methylene)benzoic acid H2L4. Complex poly-[Co(H2L1)(L2)(OH2)]·1/2H2O
已通过合成五种新的配位聚合物探索了吡唑-羧酸盐混合配体体系的实用性,这些配位聚合物衍生自双-吡唑配体4,4'-亚甲基双(3,5-二甲基-1H-吡唑)H 2 L1,大半刚性的二羧酸大肠菌素,以及故意设计和合成的配体对-((3,5-二甲基-1H-吡唑-4-基)亚甲基)苯甲酸H 2 L4。复合大分子聚-[Co(H 2 L1)(L2)(OH 2)]·1 / 2H 2 O 1具有大肠菌素(S,S)-1,4,5,8-萘四甲酸二酰亚胺-N,N'-双(2-丙酸酯)L2,并包含手性二维片,通过大量的π-π堆积相互作用缔合。配合物2和3含有大肠菌素1,4-双((3-羧苯基)甲基)哌嗪L3。复合聚-[Co(H 2 L1)2(L3)] 2是包含八面体Co(II)离子的二维聚合物,而改变合成条件可得到复合聚-[Co 2(HL1)2(L3)]。如图3所示,三维α-Po结构包含四面体Co(II)离子的吡唑酸酯桥联的二聚