Synthesis, crystal structures and properties of three new mixed-ligand d metal complexes constructed from pyridinecarboxylate and in situ generated amino-tetrazole ligand |
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| Authors: | Dongsheng Liu Xihe Huang Gansheng Huang Jianzhong Chen |
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| Institution: | a State Key Laboratory Breeding Base of Photocatalysis, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, Fujian 350108, PR China
b College of Chemistry and Chemical Engineering, Jinggangshan University, Ji’an, Jiangxi 343009, PR China |
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| Abstract: | Three new metal-organic frameworks, Zn(atz)(nic)]n(1), Zn(atz)(isonic)]n·nHisonic(2) and Cd(atz)(isonic)]n(3) (Hnic=nicotinic acid, Hisonic=isonicotinic acid), have been firstly synthesized by employing mixed-ligand of pyridinecarboxylate with the in situ generated ligand of 5-amino-tetrazolate(atz−), and characterized by elemental analysis, IR spectroscopy, TGA and single crystal X-ray diffraction. The results revealed that 1 presents a two-dimensional (2D) “sql” topological network constructed from the linear chain subunit of Zn(nic)2 and atz− ligand. A remarkable feature of 2 is a 2-fold interpenetrated diamondoid network with free Hisonic molecules locating in the channels formed by the zigzag chain subunits of Zn(isonic)2. Complex 3 is a 3D non-interpenetrated pillared framework constructed from the double chain subunits of Cd-COO−-Cd. It possesses a rarely observed (4,6)-connected “fsc” topology. The thermal stabilities and fluorescent properties of the complexes were investigated. All of these complexes exhibited intense fluorescent emissions in the solid state at room temperature. |
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| Keywords: | 5-Amino-tetrazolate In situ Mixed-ligand Crystal structure Properties |
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