Abstract:

The green synthesis and characterization experiment of a Zn(Ⅱ) complex is a comprehensive experiment that combines the basic knowledge and the scientific research frontier of the complex. In this paper, a three-dimensional complex was prepared using p-aminobenzenesulfonic acid (4-ABS) and ZnO as the main materials. The complex is characterized by single-crystal X-ray diffraction, infrared spectroscopy, thermogravimetry, UV absorption and fluorescence spectra. The configuration of the complex is optimized by the CASTEP module of Materials Studio (MS) software, which further supports the optimal structure and stabilization energy of the complex. The experimental process includes the complex preparation, evaporation concentration, decompression filtration, single crystal culture, UV absorption and fluorescence spectroscopy, thermogravimetric analysis, theoretical calculation, etc. The whole process is comprehensive and operable. Meanwhile, the experiment integrates green synthesis into the whole experimental scheme, establishing the concept of energy conservation and environmental protection. Through this experiment, students could not only understand the principles of coordination chemistry, but also learn the frontier of scientific research. Therefore, it is helpful to train the students' scientific thinking, and enhance their ability of innovation.

Key words: Comprehensive chemical experiment, Coordination chemistry, Green synthesis, Structural characterization