a zn 2+ Zn(ii)-ethylenediamine complex with six-coordinate ion and preparation method thereof

Abstract

The invention discloses a Zn 2+ The ion is a six-coordinate Zn(II)-ethylenediamine complex and a preparation method thereof, and its molecular formula is 3(C 2 H 8 N 2 )Zn·2Br·H 2 O, the complex contains asymmetric structural units, the complex belongs to the monoclinic system, the space group is C2 / c, and the unit cell parameters are: α=90.00°, β=93.899(3)°, γ=90.00° , Z=4, the asymmetric structural unit of the complex includes three molecules of ethylenediamine, one molecule of H 2 O and one molecule of ZnBr 2 , in which the N atoms of ethylenediamine are not protonated under weak alkaline conditions, and all participate in Zn 2+ The ion is six-coordinated, while the two Br ‑ The ions exist in the form of counter anions, and the water molecules also exist in the free state, resulting in stable complexes. The equipment required in this reaction is simple, the operation is simple, feasible, and reproducible, and the obtained complex has the advantages of fluorescence, high yield, and portability, and is expected to be widely used in fluorescent materials.

Description

technical field [0001] The invention relates to the field of metal-organic complexes, in particular to a Zn 2+ The invention discloses a Zn(II)-ethylenediamine complex whose ion is six-coordinate and a preparation method thereof. Background technique [0002] Fluorescent material is a kind of material that is excited by light, external electric field or electron bombardment, and in the process of transitioning back to the ground state, the absorbed energy is radiated in the form of electromagnetic waves of light, and has become information display, lighting source, optoelectronic devices, etc. The supporting materials in the field play an increasingly important role in social development and technological progress. Especially now that energy is scarce, developing fluorescent materials with high conversion efficiency is one of the ways to solve the problem of energy shortage. [0003] Metal-organic complexes have gradually become a hot spot in the study of fluorescent cryst...

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Problems solved by technology

[0003] Metal-organic complexes have gradually become a hotspot in the research of fluorescent crystal materials because they may have the common advantages of both inorganic and organic crystal materials. There has been some research on crystal materials, but the research system is mainly based on organic compounds containing aromatic rings or conjugated structures as the framework system, while no related research has been carried out on systems constructed from linear non-conjugated systems.

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