Tuning the Structure and Magnetism of Heterometallic Sodium(1+)–Cobalt(2+) Formate Coordination Polymers by Varying the Metal Ratio and Solvents
作者:Jiong-Peng Zhao、Song-De Han、Ran Zhao、Qian Yang、Ze Chang、Xian-He Bu
DOI:10.1021/ic301936k
日期:2013.3.18
formulated as [Na2Co(HCOO)4]∞ (1), [NaCo(HCOO)3]∞ (2), and [Na2Co7(HCOO)16]∞ (3) were obtained by adjusting the solvent and ratio of the reactants. In 1, a (4,4) cobalt formate layer is formed and the sodium ions connect the layers to form a three-dimensional (3D) framework. In 2, each formate ligand binds two Co2+ and two Na+ ions with a syn,syn,anti,anti coordination mode to form a chrial network with
配制为[Na 2 Co(HCOO)4 ] ∞(1),[NaCo(HCOO)3 ] ∞(2)和[Na 2 Co 7(HCOO)16 ] ∞(3)的三种新型杂金属甲酸配位聚合物为通过调节溶剂和反应物的比例获得。在图1中,形成了(4,4)甲酸钴层,并且钠离子连接这些层以形成三维(3D)骨架。在2中,每个甲酸盐配体结合两个Co 2+和两个Na +离子具有syn,syn,anti,anti配位模式,以形成具有4,6连接拓扑的Chrial网络。图3是基于甲酸钴层的Na +离子连接的3D骨架,其具有10元金属环。磁性研究表明,在1中相邻的Co 2+离子之间存在铁磁相互作用,而在2和3中占主导地位的反铁磁耦合。