Life originates from solution, and the complex, variable chemical reactions occurring in solution often obey laws that are difficult to predict 1, 2, 3, 4, 5, 6.
Alternating-current magnetic susceptibility studies indicated the field-induced single-molecule magnet behavior of 2. Tests for small amounts of CH 2Cl 2 in water further indicated the potential of 1 as a test strip for CH 2Cl 2 fluorescence detection in water samples. Therefore, we established a quick, simple, and efficient method of detecting CH 2Cl 2 that enabled strong-luminescence observation with the naked eye. Luminescence test of 1 showed that it had extremely high selectivity to dichloromethane (CH 2Cl 2). The multistep formation mechanism of the above dinuclear complex was also proposed, i.e., → Dy/ → Dy → Dy 2 → Dy 2 2.
A combination of crystallography and mass spectrometry was performed to track the exchange reaction, and the underlying mechanism accompanied by the complex assembly process was clearly presented. The new Schiff base L2 was generated in situ based on the organic ligand L1 and 2-aminomethylpyridine through Schiff base exchange reaction by using lanthanide salts as inductor.
2CH 3OH (Ln = Tb ( 1), Dy ( 2), Ho ( 3), Er ( 4), and L2 = ( E)-2-methoxy-6-(((pyridin-2-ylmethyl)imino)methyl)phenol), were obtained by reacting ( E)-2-((3-methoxy-2-oxidobenzylidene)amino)ethanesulfonate ( L1), Ln(NO 3) 3♶H 2O, and 2-aminomethylpyridine at room temperature under solvothermal conditions in methanol for 12 h.
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