State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
Inorg Chem. 2012 Jun 18;51(12):6813-20. doi: 10.1021/ic300546z. Epub 2012 Jun 1.
Here, we report two three-dimensional metal-organic frameworks of formula Co(2)(4-ptz)(2)(bpp)(N(3))(2) (1) and Co(3)(OH)(2)(bdt)(2)(bpp)(2)(H(2)O)(2) (2), which were synthesized by hydrothermal reaction from the respective tetrazole ligand (5-(4-pyridyl)tetrazole (4-H-ptz) for 1 and 5,5'-(1,4-phenylene)bis(1-H-tetrazole) (H(2)bdt) for 2), long and flexible pyridyl-containing ligand 1,3-bi(4-pyridyl)propane (bpp), NaN(3), and CoCl(2). Both 1 and 2 consist of well-isolated one-dimensional cobalt(II) alternating chains further linked by the bpp and/or the tetrazole ligand, while their chain structures are totally different. The chains of 1 are formed by Co(2+) ions bridged by single μ-EE-N(3) and triple (μ-EO-N(3))(μ-tetrazole)(2) alternately, whereas the Co(2+) ions are bridged by μ(3)-OH to form Co(3)(OH)(2) chains in compound 2. Magnetic measurements demonstrate that compound 1 contains an alternating antiferromagnetic (AF)/ferromagnetic (FM) ferrimagnetic chain, while compound 2 exhibits the coexistence of spin canting, slow magnetic dynamics, and finite-size effect, with alternating AF/AF/FM ferrimagnetic chains.
在这里，我们报告了两个三维金属有机骨架，其化学式为Co(2)(4-ptz)(2)(bpp)(N(3))(2)（1）和Co(3)(OH)(2)(bdt)(2)(bpp)(2)(H(2)O)(2)（2），它们是通过各自的四唑配体（5-(4-吡啶基)四唑（4-H-ptz）用于 1 和 5,5'-(1,4-亚苯基)双(1-H-四唑)(H(2)bdt)用于 2）、长而灵活的含吡啶配体 1,3-双(4-吡啶基)丙烷（bpp）、NaN(3)和 CoCl(2)，通过水热反应合成的。1 和 2 都由孤立的一维钴(II)交替链组成，这些链进一步由 bpp 和/或四唑配体连接，而它们的链结构完全不同。1 的链由 Co(2+)离子通过单μ-EE-N(3)和三μ-EO-N(3)(μ-四唑)(2)交替桥接形成，而在化合物 2 中，Co(2+)离子通过μ(3)-OH 桥接形成 Co(3)(OH)(2)链。磁性测量表明，化合物 1 包含交替的反铁磁（AF）/铁磁（FM）亚铁磁链，而化合物 2 表现出自旋倾斜、慢磁动力学和有限尺寸效应的共存，具有交替的 AF/AF/FM 亚铁磁链。
