Abstract

The reaction of carbon dioxide with propylene oxide was carried out in the presence of a new pentadentate chromium complex, dichloro[2,6-diacetylpyridine bis(4-tert-butylbenzoylhydrazone)]chromium(III). The reaction kinetics was studied under different reaction conditions (temperature, pressure, and catalyst concentration). Optimal conditions for the synthesis of cyclic carbonate in the presence of the new chromium complex were found. The effective activation energy of the formation of cyclic carbonate was determined. The catalyst activity significantly depended on the substituent R in a 2,6-diacetylpyridine bis(4-R-benzoylhydrazone) ligand.

中文翻译：

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具有五齿 (N3O2) 席夫碱配体的新型铬 (III) 配合物在二氧化碳与环氧丙烷反应中的活性

摘要

二氧化碳与环氧丙烷的反应在新的五齿铬络合物二氯[2,6-二乙酰基吡啶双(4-叔丁基苯甲酰腙)]铬(III)存在下进行。在不同的反应条件（温度、压力和催化剂浓度）下研究了反应动力学。发现了在新的铬配合物存在下合成环状碳酸酯的最佳条件。确定了形成环状碳酸酯的有效活化能。催化剂活性显着取决于 2,6-二乙酰吡啶双 (4-R-苯甲酰腙) 配体中的取代基 R。