Directed assembly of cobalt(II) 1-H-indazole-3-carboxylic acid coordination networks by bipyridine and its derivatives: structural versatility, electrochemical properties, and antifungal activity

作者：Xiao, Han; Li, Xun-Bi; Qin, Gui-Fang; Xia, Yao; Zhou, Gui^*

来源：Journal of the Iranian Chemical Society, 2016, 13(5): 793-802.

DOI：10.1007/s13738-015-0792-8

• 1-H-indazole-3-carboxylic acid (H2L)
• Cobalt(II) complex
• Single-crystal structure
• Electrochemical property
• Antifungal activity

This paper describes the hydrothermal synthesis, full characterization, and architectural diversity of three intriguingly bioactive cobalt-organic frameworks, namely, 3D [Co(HL (-) )(2)(BPY)] (n) center dot 4nH(2)O (1), 2D [Co(HL (-) )(2)(BPE)] (n) (2), and 2D [Co(HL (-) )(2)(DPP)] (n) (3) coordination polymers, synthesized through a mixed ligand strategy using H (2) L (1-H-indazole-3-carboxylic acid) as a main structural block and the flexible bipyridine and its derivatives (BPY = 4,4'-bipydine, BPE = 1,2-bis(4-pyridyl)ethane, DPP = 1,3-bis(4-pyridyl)propane) as auxiliary ligand sources. Complexes 1-3 were isolated as air stable and slightly soluble crystalline solids and characterized using elemental analysis, FT-IR, electrochemical technique, thermogravimetric analysis, powder X-ray diffractometer, and single-crystal X-ray crystallography. The bipyridine derivatives played key roles in defining the structural space group and dimensionality feature of the obtained networks. The abundant H-bonding and pi-pi stacking interactions in complexes 1-3 gave rise to their intricate metal-organic structures of 3D (1), 2D (2), and 2D (3). In addition, the solutions of complexes 1-3 showed profound antifungal activities against the selected strain of Colletotrichum musae compared with the controlled group using benomyl as a traditional agrochemical fungicide.

• 出版日期2016-5
• 单位广西民族大学