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在水-乙醇体系中,以寡聚酸钾与Cu2+离子反应合成寡聚酸合铜(Ⅱ)配合物,采用正交实验,考察了V(水)∶V(乙醇)、反应温度、反应时间对螯合反应的影响,最优反应条件为:V(水)∶V(乙醇)=1∶4,40℃,6 h。采用红外光谱,紫外光谱和差热-热重分析对寡聚酸合铜(Ⅱ)配合物进行了表征。红外光谱和紫外光谱分析均表明,Cu2+与寡聚酸配位。寡聚酸合铜(Ⅱ)配合物中金属配位方式为单齿配位。热分析表明,配合物在190℃之前是稳定的,其分解过程是逐步进行的。初步应用实验表明,叶面喷施稀释100 000倍的寡聚酸合铜(Ⅱ)促进了花生的生长发育。
In the water - ethanol system, oligomeric potassium (Ⅱ) complexes were synthesized by the reaction of potassium oligosaccharides and Cu2 + ions. The effects of V (water): V (ethanol), reaction temperature, reaction time The optimum reaction conditions for the chelation reaction were: V (water): V (ethanol) = 1: 4, 40 ℃, 6 h. The copper (II) oligoacid complexes were characterized by FTIR, UV-Vis and DTA-TG. Infrared and UV spectroscopy showed that Cu2 + coordinated with oligomeric acids. The metal coordination mode in the oligomeric copper (Ⅱ) complex is monodentate coordination. Thermal analysis shows that the complex is stable before 190 ℃, and the decomposition process is carried out step by step. Preliminary application experiments showed that foliar application of oligomeric copper (II) diluted 100 000 times promoted the growth and development of peanut.