Crystal Structure and Luminescence of a Novel Binuclear Zinc(II) Complex with Di-2-Pyridylamine And 4,4′-Sulfonyldibenzoate

Abstract

A binuclear Zn(II) complex [Zn₂(SDBA)₂(DPA)₂.2H₂O] (1) (DPA = di-2-pyridylamine, H₂SDBA = 4,4′- sulfonyldibenzoic acid) is synthesized and characterized using single crystal X-ray diffraction, IR spectroscopy, and elemental analysis. The single crystal X-ray diffraction analysis reveals that complex 1 is a binuclear zinc(II) complex. The binuclear molecules are further connected by three types of N–H...O, C–H...O, and O–H...O hydrogen bonds, generating a three-dimensional supramolecular structure. Meanwhile, S–O...π interactions further consolidate the three-dimensional supramolecular framework of 1. In addition, the thermal stability and luminescent properties of the title complex are briefly investigated. The luminescence measurements reveal that complex 1 exhibits fluorescent emission in the solid state at room temperature.