Benzimidazole derivative namely cadmium (II) complex with fluorescence property and synthetic method of benzimidazole derivative

The invention discloses a benzimidazole derivative namely a cadmium (II) complex with a fluorescence property and a synthetic method of the benzimidazole derivative. The flexible benzimidazole derivative complex with the fluorescence property has a structure shown in the specification. The technical scheme adopted by the invention is that a benzimidazole derivative synthesized by taking dilute hydrochloric acid as a solvent is used as a first ligand, and a cadmium metal complex is synthesized by virtue of a solvent thermal method by taking H2O-methanol-DMF(N,N-dimethylfomamide) as a solvent. According to the synthetic method disclosed by the invention, a ligand can be synthesized at a low temperature and has relatively strong coordination ability and a flexible and changeable coordination mode; and the {[Cd(immb)I2].DMF}n complex with the fluorescence property is unique in structure, the synthetic technique is simple and safe, the product is high in purity, and a measuring method is accurate and novel.