Solvents and auxiliary ligands co-regulate three antiferromagnetic Co(_(_(II))) MOFs based on a semi-rigid carboxylate ligand?

Lin Cui; Guo-Ping Yang; Wei-Ping WuHui-Hui MiaoQi-Zhen ShiYao-Yu Wang

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Solvents and auxiliary ligands co-regulate three antiferromagnetic Co(_(_(II))) MOFs based on a semi-rigid carboxylate ligand?

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By reacting an asymmetry semi-rigid Y-shaped/L-shaped linker H_3cpta (H_3cpta = 3-(4'-carboxyphenoxy)- phthalic acid) and Co(CH_3COO)_2·6H_2O under different N-donor ligands in different solvents, three new Co-based coordination polymers, Co_3(cpta)_2(bpe)_3(H_2O)_4 (1) Co(μ_2-H_2O)(μ_3-OH)(Hcpta)(bpe)(H_2O)· 3(DMF)3(H_2O) (2) and Co_3(cpta)_2(bpa)_4 (3) have been obtained. They exhibit trinodal topological nets/ layer, based on Co~(2+) ions and Y-shaped/L-shaped carboxylate linkers. 1 and 3 present 3D frameworks with the point symbol {4·10~2}2{10~5·12}{4·8~5}_2 for 1 and {4·8~2}_2{8~5·9}{4·6~7·9~2}_2 for 3. While, 2 exhibits a 2D layer with the point symbol {4·6·8}{4·6~2·8~3}{6~2·8}. The magnetic studies indicate that all of the three complexes show antiferromagnetic exchanges transmitted through μ3-carboxylate/μ4-carboxylate bridges, μ2- H_2O molecules and μ_3-OH ions between Co~(2+) ions, respectively. And the result of this research shows that the solvent and the secondary ligands could co-regulate coordination polymer with interesting properties, providing a constructive guidance when synthesizing versatile topologies with the same organic spacer but a different architecture.

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来源
《Dalton transactions: An international journal of inorganic chemistry》 |2014年第15期|5823-5830|共8页
作者
Lin Cui; Guo-Ping Yang; Wei-Ping WuHui-Hui MiaoQi-Zhen ShiYao-Yu Wang;
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作者单位

Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, P. R. China;

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正文语种英语
中图分类化学;无机化学;
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asymmetry; architecture; secondary ligands;

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Solvents and auxiliary ligands co-regulate three antiferromagnetic Co(_(_(II))) MOFs based on a semi-rigid carboxylate ligand?

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