Abstract

The catalytic activity of supramolecular systems based on the complexes of 1-alkyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide (Alk = C_nH_{2n+ 1}, n = 16, 18) with lanthanum nitrate in the reaction of hydrolytic decomposition of 4-nitrophenyl-O-alkylchloromethylphosphonates (Alk = C_nH_{2n+ 1}, n = 4, 6) was demonstrated. It was found that the reaction was accelerated due to the formation of nanoscale aggregates of various sizes and types (small micelles and larger supramolecular structures), which effectively bind the reagents. The binding constants of phosphonates with aggregates are greater than three or four orders of magnitude. The catalytic activity of the metal complex systems manifested itself at a lower amphiphile concentration in solution, as compared with that of ligands.

中文翻译：

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基于1-烷基-4-氮杂-1-氮杂双环[2.2.2]辛烷溴化物金属配合物的催化体系

摘要

基于1-烷基-4-氮杂-1-氮杂双环[2.2.2]辛烷溴化物（Alk = C _n H _{2 n +1}，n = 16，18）与硝酸镧的络合物的超分子体系的催化活性4-硝基苯基-O-烷基氯甲基膦酸酯的水解分解反应（Alk = C _n H _{2 n +1}，n= 4、6）。发现由于各种尺寸和类型（小胶束和较大的超分子结构）的纳米级聚集体的形成而促进了反应，其有效地结合了试剂。膦酸酯与聚集体的结合常数大于三个或四个数量级。与配体相比，金属络合物体系的催化活性在溶液中的两亲物浓度较低时表现出来。