Influence of Angular Dicarboxylate Ligand on the Structures of Single and Double Pillared-Layer Coordination Polymers of Co(II)
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- 作者：In-Hyeok Park ; Raghavender Medishetty ; Hyeong-Hwan Lee ; Tun Seng Herng ; Jun Ding ; Shim Sung Lee ; Jagadese J. Vittal
- 刊名：Crystal Growth & Design
- 出版年：2015
- 出版时间：August 5, 2015
- 年：2015
- 卷：15
- 期：8
- 页码：4156-4161
- 全文大小：431K
- ISSN：1528-7505
文摘
Two pillared-layer coordination polymeric compounds, namely, [Co2(bpeb)2(obc)2]路DMF路5H2O (1) and [Co2(bpeb)(obc)2]路2DMF路H2O (2), have been synthesized using a long dipyridyl spacer ligand (1,4-bis[2-(4-pyridyl)ethenyl]benzene, bpeb), 4,4鈥?oxybisbenzoate (obc), and Co(NO3)2路6H2O under solvothermal conditions, using appropriate ratios of Co(II) to bpeb. In compound 1, the double pillared-layer structure has a dimeric repeating unit and exhibits rob topology, while single pillared-layer compound 2 has an unusual building block which is a linkage isomer of the well-known paddle-wheel structure and has a pcu topology. Twofold and threefold interpenetrations are observed in 1 and 2, respectively. The variable-temperature magnetic properties of 1 and 2 were also investigated. The double pillared-layer structure of 1 exhibits antiferromagnetic behavior while a relatively rare ferromagnetism has been observed for the single pillared-layer structure of 2.