Two 3D POM-Based Inorganic–organic Hybrid Compounds Constructed from Different {VO3}4n Subunits and N-donor ligands: Syntheses, Structures, Electrocatalytic and Magnetic Properties

摘要: Two new 3D organic-inorganic hybrid materials Cu(bim)V2O6 (1) (bim=bis(1-imidazolyl)methane) and Co(2-mbim)V2O6 (2) (2-mbim=bis(2-methylimidazol-1-yl)methane) based on polyoxovanadates (POVs) organic ligands decorated transition metal units have been synthesized by solvothermal methods. Single crystal XRD, soild UV-vis IR spectra, powder magnetic measurement thermogravimetric (TG) measurements were performed to analyze the structures properties of 1 2. The topological both compounds are interesting, not reported previously. Structural analysis indicates that compound features a zeolite-like framework, constructed wave-like {V4O12}n4n− chains [Cu(bim)2]n2n+ chains. These parallel constitute fundamental motif via -(Cu-O−V)- helical bridges. In structure 2, {V4O12}4− cycle is linked with four cycles giving rise 2D {Co2V4O12}n layers which further pillared 2-mbim ligand N–Co–O linkages form framework. Electrochemical studies exhibit possesses excellent electrocatalytic activity toward reduction hydrogen peroxide. susceptibility antiferromagnetic interactions in