Ionothermal Synthesis, Crystal Structure, and Luminescent Properties of Two Novel Layered Indium-1,4-Benzenedicarboxylate Complexes

Abstract

Two novel organic-inorganic hybrid indium complexes, [C6H11N2]2[In2(BDC)3Br2] (1) and [C7H13N2]2[In2(BDC) 3Br2] (2) (BDC2– = 1,4-benzenedicarboxylate), have been synthesized under ionothermal conditions and characterized by elemental analysis, FT-IR, and TG. Single X-ray diffraction studies revealed that compounds 1 and 2 are isostructural. Both crystallize in the monoclinic system with space group P21/c. Their structures are characterized as novel graphite-like layered structure with larger rings constructed by InO5Br polyhedra and the 1,4-benzendicarboxylate organic linkers. The used ILs cations [C6H11N2]+ are located between the layers and compensate for the negative charges of framework. Furthermore, their luminescent properties have also been studied.