作　　者： ; ; ;

机构地区： 南开大学化学学院元素有机化学国家重点实验室

出　　处： 《高等学校化学学报》 2007年第12期2327-2329,共3页

摘　　要： There is an increasing interest for the study of NO affinity of organic nitrite,for the biological and physiological effects of organic nitrites seem to be due to their ability releasing NO.In this paper,NO chemical affinities of ten benzyl nitrites were determined respectively by titration calorimetry and from a thermodynamic cycle in acetonitrile solution.The results show that ΔHhet of O—NO in the O-nitroso compounds were substantially larger than the corresponding ΔHhomo of O—NO in the same compounds,suggesting that these O-nitroso compounds were much easier release NO radical by the O—NO bond homolytic cleavage.It is believed that the structural and energetic information disclosed in this work should be useful in understanding chemical and biological functions of organic nitrites. There is an increasing interest for the study of NO affinity of organic nitrite, for the biological and physiological effects of organic nitrites seem to be due to their ability releasing NO. In this paper, NO chemical affinities of ten benzyl nitrites were determined respectively by titration calorimetry and from a thermody- namic cycle in acetonitrile solution. The results show that AHhe, of O—NO in the O-nitroso compounds were substantially larger than the corresponding AHh of O--NO in the same compounds, suggesting that these O-nitroso compounds were much easier release NO radical by the O--NO bond homolytic cleavage. It is believed that the structural and energetic information disclosed in this work should be useful in understanding chemical and biological functions of organic nitrites.

关 键 词： 亚硝酸苄 醇 酯 化学亲和势 键能 滴定量热

领　　域： [理学] [理学]