Syntheses, Crystal Structures and Properties of Two New Zn Based Boron Imidazolate Frameworks

Two new boron imidazolate frameworks (BIFs), Zn-2[HBH(2-mim)(3)](2)(1,2-PEA)(2)(EG)(2) (BIF-120, EG = ethylene glycol) and Zn[BH(2-mim)(3)](1,2-HPEA) (BIF-121), were successfully synthesized by mixing the KBH(2-mim)(3)] ligand and the semirigid aromatic dicarboxylate ligand 1,2-benzenediacetic acid (1,2-H(2)PEA) under solvothermal conditions. In this paper, the two samples were structurally characterized by single-crystal X-ray diffraction and tested by infrared spectroscopy (IR), UV-visible spectroscopy (UV-Vis), thermogravimetric analysis TGA and X-ray powder diffractions. In addition, the solid-state luminescent properties of these crystals were also investigated.

Automated summary

Two new boron imidazolate frameworks were successfully synthesized by mixing ligands under solvothermal conditions, and characterized by various analytical methods. The solid-state luminescent properties of these crystals were also investigated in this study.