Synthesis and properties of a new (3,8)-connected pillar-layered Co(II)-based coordination polymer supported by tetranuclear secondary building units (SBUs)

• Published in: Inorganic chemistry communications Vol. 43; pp. 81 - 85
• Main Authors: Yang, Guo-Ping, Li, Yuanpu, Wang, Dangpo, Guo, Yanjun, Hao, Wenle, Wang, Yao-Yu, Shi, Qi-Zhen
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2014
• Subjects: Co(II)-based complex; Magnetic properties; Tetranuclear SBUs; tfz-d Topological net; tfz-d Topological net; Co(II)-based complex; Tetranuclear SBUs; Magnetic properties
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2014.02.015

An unusual three-dimensional Co(II)-based pillar-layered coordination polymer [Co2(L)(bipy)(OH)(H2O)]n·nCH3CN (1, H3L=2-(2′,4′-dicarboxylphenoxy)benzoic acid, bipy=4,4′-bipyridine), has been successfully yielded via the mixed ligand approach under hydrothermal condition, and characterized carefully by elemental analysis, infrared spectra, and single crystal X-ray diffraction, and magnetic measurement. Single crystal X-ray analysis reveals that the framework of complex 1 is firstly assembled by the 2D undulated layers, and then further supported by bipy spacers into a 3D intricate framework. Topologically, 1 shows a 3D binodal (3,8)-connected tfz-d net with the Schläfli symbol of (43)2(46·618·84), which is less common and rarely found in the reported literatures. Moreover, the magnetic analysis indicates that 1 exhibits the antiferromagnetic coupling interaction between Co(II) ions. A three-dimensional (3D) pillar-layered Co(II)-based coordination polymer [Co2(L)(bipy)(OH)(H2O)]n·nCH3CN (1) via the mixed ligand approach, where H3L is 2-(2′,4′-dicarboxylphenoxy)benzoic acid and bipy is 4,4′-bipyridine. Complex 1 shows a (3,8)-connected tfz-d topology based on the tetranuclear Co(II) SBUs, and the magnetic measurements indicate the antiferromagnetic interaction within the neighboring Co(II) ions. [Display omitted] •The 2-(2',4'-dicarboxylphenoxy)benzoic acid (H3L) is chosen to produce CPs.•A 3D pillar-layered CP [Co2(L)(bipy)(OH)(H2O)]n·nCH3CN (1) has been yielded.•1 shows (3,8)-connected tfz-d topology built by the organic ligands and Co(II) SBUs.•1 exhibits the antiferromagnetic coupling between the Co(II) ions.