Mixed ligand-based zinc complex and preparation method thereof

Abstract

The invention discloses a mixed ligand-based zinc (II) complex and a preparation method thereof. The method comprises the following step: preparing colorless lump crystal from zinc nitrate hexahydrate, sodium azide, 4-cyanopyridine and 2,2'-diphenyldicarboxylic acid in secondary deionized water by hydrothermal in situ reaction, wherein the molar ratio of zinc nitrate hexahydrate to sodium azide to 4-cyanopyridine to 2,2'-diphenyldicarboxylic acid is 2:2:2:1; the reaction medium is secondary deionized water; the specific steps are as follows: reacting at constant temperature of 180 DEG C for 3 days, then cooling to room temperature, filtering, washing and drying to obtain the colorless lump crystal; the chemical formula is Zn<2>(PTZ)<2>(DPA)(H<2>O)<2>; PTZ is 5-(4-pyridine) tetrazole monovalent anion obtained from sodium azide and 4-cyanopyridine by [2+3] in situ reaction under the hydrothermal condition; DPA is divalent anion of 2,2'-diphenyldicarboxylic acid. The complex belongs to a functional coordination complex, has a novel two-dimensional layer structure, is good in thermal stability, and can be further developed and applied as a molecular-based light-emitting material. The preparation method disclosed by the invention is simple and available in raw material.

Description

technical field [0001] The invention belongs to the technical field of functional coordination polymers and molecular-based luminescent materials, and particularly relates to a zinc (II) complex containing aromatic carboxylic acid and tetrazolium mixed ligands and a preparation method thereof. The invented complex has a novel two-dimensional layered structure and can be further developed and applied as an optical material. Background technique [0002] Metal-organic complexes have become an important research direction in the field of crystal engineering due to their rich spatial topology and potential applications in separation, gas storage, selective catalysis, and molecular recognition. According to the principles of crystal engineering, central metal ions with specific geometric configurations and special organic ligands can achieve directional design and synthesis to a certain extent. However, due to the influence of the coordination mode and coordination environment o...

AI Technical Summary

Problems solved by technology

At present, there have been many reports on tetrazole ligands synthesized first and then reacted to obtain complexes. Tetrazolium complexes obtained through in situ reaction self-assembly often have fascinating structures and luminescent properties. There is still room for further research in this field.

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