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| Syntheses, Crystal Structures and Magnetic Properties of Two Copper(II) and Manganese(II) Coordination Compounds Constructed from Biphenyl Tricarboxylic Acid |
| Author Name | Affiliation | E-mail | | LI Yu | School of Eco-Environmental Engineering, Foshan Research Center for Special Functional Building Materials and Its Green Preparation Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China | | | ZOU Xun-Zhong | School of Eco-Environmental Engineering, Foshan Research Center for Special Functional Building Materials and Its Green Preparation Technology, Guangdong Industry Polytechnic, Guangzhou 510300, China | | | GU Jin-Zhong | College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China | gujzh@lzu.edu.cn | | CHENG Xiao-Ling | School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China | ggcxl@163.com |
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| Abstract: Zero dimensional dinuclear copper(Ⅱ) coordination compound and 3D manganese(Ⅱ) coordination polymer, namely[Cu2(Hdppa)2(4,4'-bipy)(H2O)4]·4,4'-bipy·6H2O (1) and {[Mn3(μ5-dppa)2(4,4'-bipy)(H2O)2]·4H2O}n (2), have been constructed hydrothermally using H3dppa, 4,4'-bipy (H3dppa=5-(3,4-dicarboxylphenyl)picolinic acid, 4,4'-bipy=4,4'-bipyridine), and copper or manganese chlorides. Single-crystal X-ray diffraction analyses revealed that two compounds crystallize in the triclinic or monoclinic system, space group P1 or C2/c. In compound 1, one 4,4'-bipy ligand bridges neighboring Cu(Ⅱ) ions to form a discrete dinuclear copper(Ⅱ) structure. These Cu2 units are assembled to a 3D supramolecular framework through O-H…O/N hydrogen bond. In compound 2, neighboring Mn(Ⅱ) ions are bridged by the carboxylate groups of μ5-dppa3- ligands, producing a double-helix Mn(Ⅱ) chain subunit. The adjacent double-helix chains subunits are further linked by the dppa3- blocks and 4,4'-bipy ligands into a 3D framework. Magnetic studies for compound 2 demonstrate an antiferromagnetic coupling between the adjacent Mn(Ⅱ) centers. |
| Keywords: coordination polymer hydrogen bonding tricarboxylic acid magnetic properties |
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| LI Yu,ZOU Xun-Zhong,GU Jin-Zhong,CHENG Xiao-Ling.Syntheses, Crystal Structures and Magnetic Properties of Two Copper(II) and Manganese(II) Coordination Compounds Constructed from Biphenyl Tricarboxylic Acid[J].Chinese Journal of Inorganic Chemistry,2018,34(6):1159-1165. |
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