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合成了两种新的聚醚取代的水杨醛亚胺Schiff碱锰(III)配合物MnL12Cl和MnL2Cl,研究了它们与表面活性剂2Brij35形成的金属胶束对BNPP的催化水解反应.探讨了催化反应机理,提出了水解反应的动力学数学模型;计算了催化反应的Michanelis常数和表观活化能,并与不含聚醚链的类似物MnL2Cl比较,考查了配合物配体中聚醚支链及其3端基对催化水解反应的影响.结果表明,催化水解反应遵循金属-氢氧离子机理;以羟基作为聚醚链端基的MnL12Cl的催化活性最高,在相同条件下,其表观一级速率常数约为MnL2Cl的3倍,为MnL2Cl的30倍.23
Two novel polyether substituted salicylaldimine Schiff base manganese (Mn) complexes MnL12Cl and MnL2Cl were synthesized and their catalytic hydrolysis reaction on BNPP by metal micelles formed by 2Brij35 was studied. The catalytic reaction mechanism , A kinetic mathematical model of the hydrolysis reaction was proposed. The Michanelis constant and apparent activation energy of the catalytic reaction were calculated. Compared with MnL2Cl, a non-polyether chain analogue, The results showed that the catalytic hydrolysis followed the metal-hydroxide ion mechanism. The catalytic activity of MnL12Cl using hydroxyl as polyether chain end group was the highest. Under the same conditions, the apparent first-order rate The constant is about 3 times that of MnL2Cl and 30 times that of MnL2Cl