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摘要 Two new heterobimetallic coordination polymers {[Co(NiL)(H2O)3]·4H2O}n (1) and {[Cu(NiL)(H2O)3]·4H2O}n (2) were synthesized based on metalloligand under the same self-assembly conditions. X-ray diffraction analyses reveal that the two compounds involve close-packed zigzag chains, which expand into various three-dimensional supramolecular frameworks through the second interactions such as hydrogen bonds and π∙∙∙π stacking interactions. In these two compounds, NiL as a bridging ligand chelates the metal ion nodes via two oxamido carbonyls and carboxylate oxygen atom. The central Co(II) and Cu(II) ions in 1 and 2 both exhibit distorted octahedral coordination geometry. They are bridged by macrocyclic oxamido metalloligands fusing the zigzag chains with a ‘‘head-to-tail’’ arrangement. The Ni(II) ion in metalloligand is coordinated by four nitrogen atoms with the [NiN4] chromophore exhibiting distorted planarity. The two investigated compounds were further characterized by thermogravimetric analysis and FT-IR spectroscopy. The fluorescent properties of 1 and 2 in the solid state were also investigated.

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	石晓明
	肖利娜
	李书静
	李孝增

关键词 ： zigzag chain, heterobimetallic, metalloligand, crystal structure, fluorescence

Abstract：Two new heterobimetallic coordination polymers {[Co(NiL)(H2O)3]·4H2O}n (1) and {[Cu(NiL)(H2O)3]·4H2O}n (2) were synthesized based on metalloligand under the same self-assembly conditions. X-ray diffraction analyses reveal that the two compounds involve close-packed zigzag chains, which expand into various three-dimensional supramolecular frameworks through the second interactions such as hydrogen bonds and π∙∙∙π stacking interactions. In these two compounds, NiL as a bridging ligand chelates the metal ion nodes via two oxamido carbonyls and carboxylate oxygen atom. The central Co(II) and Cu(II) ions in 1 and 2 both exhibit distorted octahedral coordination geometry. They are bridged by macrocyclic oxamido metalloligands fusing the zigzag chains with a ‘‘head-to-tail’’ arrangement. The Ni(II) ion in metalloligand is coordinated by four nitrogen atoms with the [NiN4] chromophore exhibiting distorted planarity. The two investigated compounds were further characterized by thermogravimetric analysis and FT-IR spectroscopy. The fluorescent properties of 1 and 2 in the solid state were also investigated.

Key words： zigzag chain heterobimetallic metalloligand crystal structure fluorescence

收稿日期: 2019-09-16 出版日期: 2020-08-12

基金资助:The project was supported by the Natural Science Foundation of He'nan Educational Committee of China (17A150056), the National Natural Science Foundation of China (21501203), the Funds of Basic and Advanced Technology Research Project of Henan Province of China (192012310497), the Research Fund for the Doctoral Program of Higher Education of China (Zhoukou Normal University, No. ZKNUB2013003), and the Funds of Zhoukou Normal University (ZKNUB115202)

通讯作者: lixiaozeng321@tju.edu.cn and shixiaoming2019@163.com E-mail: lixiaozeng321@tju.edu.cn and shixiaoming2019@163.com

引用本文:

石晓明;肖利娜;李书静;李孝增.

Synthesis and Characterization of Heterobimetallic Zigzag Chains with a Close-packed Structure Based on Macrocyclic Metalloligands

[J]. 结构化学, 2020, 39(8): 1465-1474.
SHI Xiao-Ming;XIAO Li-Na;LI Shu-Jing;LI Xiao-Zeng.

Synthesis and Characterization of Heterobimetallic Zigzag Chains with a Close-packed Structure Based on Macrocyclic Metalloligands

. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 2020, 39(8): 1465-1474.

链接本文:

http://manu30.magtech.com.cn/jghx/CN/ 或 http://manu30.magtech.com.cn/jghx/CN/Y2020/V39/I8/1465

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