Rare earth coordination compound containing Schiff base and bipyridyl and preparation method and bacteriostasis application thereof
A technology of Schiff base and bipyridine, which is applied in the field of rare earth complexes containing salicylaldehyde glycine Schiff base and bipyridine and its preparation, can solve the problems of no unified explanation, etc., and achieve good antibacterial effect and use of rare earth The effect of reducing the amount and widening the application range
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Embodiment 1
[0022] Weigh 5mmol of 2,2'-bipyridine and dissolve it in 50mL of methanol, heat to dissolve at 50°C, and under constant stirring, dissolve 50mL of La(NO 3 ) 3 The methanol solution was added dropwise to the above ligand solution, heated and stirred for 1 h. Then 50mL of the methanol solution of salicylaldehyde glycine Schiff base with a concentration of 0.1mol / L was added dropwise to the above reaction system, and the pH value of the system was adjusted to 6 with the methanol solution of potassium hydroxide, and continued heating and stirring for 2h to produce A large amount of precipitation, let stand for 10h. After the solid precipitate was filtered, it was washed several times with methanol, and the obtained solid was dried to constant weight, and the obtained solid powder was the rare earth ternary complex La(Sal-Gly)(Bipy)(NO 3 )·H 2 O products. The element composition analysis results are: experimental value (theoretical value), C%, 40.93 (41.32); H%, 3.41 (3.10); N%...
Embodiment 2
[0024] Weigh 5mmol of 2,2'-bipyridine and dissolve it in 50mL of methanol, heat to dissolve at 60°C, and under constant stirring, add 50mL of Nd(NO 3 ) 3 The methanol solution was added dropwise to the above ligand solution, heated and stirred for 1.5h. Then 50 mL of methanol solution of salicylaldehyde glycine Schiff base with a concentration of 0.1 mol / L was added dropwise to the above reaction system, the pH value of the system was adjusted to 6.5 with methanol solution of potassium hydroxide, and heating and stirring was continued for 2 h to produce A large amount of precipitation, let stand for 10h. After the solid precipitate was filtered, it was washed several times with methanol, and the obtained solid was dried to constant weight, and the obtained solid powder was the rare earth ternary complex Nd(Sal-Gly)(Bipy)(NO 3 )·H 2 O products. Its element composition analysis results are: experimental value (theoretical value), C%, 40.77 (40.93); H%, 3.25 (3.07); N%, 9.59 ...
Embodiment 3
[0026] Weigh 5mmol of 2,2'-bipyridine and dissolve it in 50mL of methanol, heat to dissolve at 65°C, and under constant stirring, add 50mL of Sm(NO 3 ) 3 The methanol solution was added dropwise to the above ligand solution, heated and stirred for 5h. Then 50 mL of methanol solution of salicylaldehyde glycine Schiff base with a concentration of 0.1 mol / L was added dropwise to the above reaction system, the pH value of the system was adjusted to 6.2 with methanol solution of potassium hydroxide, and heating and stirring was continued for 1 h to produce A large amount of precipitation, let stand for 10h. After the solid precipitate was filtered, it was washed several times with methanol, and the obtained solid was dried to constant weight, and the obtained solid powder was the rare earth ternary complex Sm(Sal-Gly)(Bipy)(NO 3 )·H 2 O products. Its element composition analysis results are: experimental value (theoretical value), C%, 40.17 (40.48); H%, 3.22 (3.04); N%, 9.67 (9...
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