A novel two-dimensional square grid cobalt complex: Synthesis, structure, luminescent and magnetic properties

A novel cobalt(II) coordination polymer, [Co(L)2]n (1) (HL = 4-(imidazol-1-yl)-benzoic acid), has been hydrothermally synthesized and structurally characterized by X-ray diffraction, IR spectrum and elemental analyses. Structure determination of complex 1 reveals that the two-dimensional (2D) network framework consists of regular square grid with dimensions of ca. 11.42 × 11.42 Å. Complex 1 exhibits a strong blue luminescence centering at 409 nm in the solid. Variable temperature magnetic susceptibility study shows there is a weak antiferromagnetic interaction in complex 1. Thermal property is also investigated.

Graphical abstractA novel cobalt complex, showing a perfect 2D square grid framework with dimensions of 11.42 × 11.42 Å, has been easily synthesized by hydrothermal technology. The complex demonstrates luminescent and antiferromagnetic dual functionalities, which suggests that conjugated ligand is a good candidate for construction of magneto-optical multifunctional materials.Figure optionsDownload full-size imageDownload as PowerPoint slide