Construction and Electrochemical Properties of Co/Ni Coordination Polymer Based on Flexible Phenyldiacetate
Two coordination polymers([Co(tib)(mpda)(H2 O)2]·H2 O,[Ni(tib)(mpda)(H2 O)2]·H2 O)were synthesized based on flexible phenyldiacetic acid,and characterized by elemental analysis,infrared spectroscopy,thermogravimetric analysis and X-ray single crystal diffraction.In the structure of[Ni(tib)(mpda)(H2O)2]·H2O,the tib ligands coordinate as three nodes with Co(Ⅱ)ions to form a 2D grid plane;cis-mpda ligands are attached to the 2D grid face as end-bases;through the O—H···O interaction between the mpda virgin carboxyl O and the coordinated water molecule(bond length of O1 O3 is 0.262 4 nm,∠O5—H5A… O2=155.41°),a three-dimensional supramolecular network structure is formed.Two coordination polymers belong to the heterogeneous crystal structure.The specific surface areas ofthe two coordination polymers are 54 and 58 m2/g,respectively.[Ni(tib)(mpda)(H2 O)2]·H2 O has a complete cyclic voltammetric curve(reduction and oxidation potentials are 0.205 and 0.563 V,respectively)and good scanning rate.
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