烷基钴肟及其β-环糊精包结物水溶液中氨取代反应平衡常数测定(英文)  

EQUILIBRIUM CONSTANTS DETERMINATION FOR LIGAND SUBSTITUTION OF\= ALKYLCOBALOXIMES AND ALKYLCOBALOXIMES/CD BY\= AMMONIA IN AQUEOUS SOLUTION

作　　者：陈瑛[1] 陈慧兰[1] 顾寅 

机构地区：[1]南京大学化学化工学院

出　　处：《无机化学学报》1999年第4期513-517,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然基金

摘　　要：０ＩｎｔｒｏｄｕｃｔｉｏｎＣｙｃｌｏｄｅｘｔｒｉｎｓ（ＣＤｓ），ａｒｅｃｙｃｌｉｃｏｌｉｇｏｓａｃｃｈａｒｉｄｅｓｗｉｔｈｓｉｘ（α），ｓｅｖｅｎ（β）ａｎｄｅｉｇｈｔ（γ）Ｄ（＋）－ｇｌｕｃｏｐｙ－ｒａｎｏｓｅｕｎｉｔｓ．Ｔｈｅｙｈａｖｅｂｅｅｎｐ...The axial coordinate water substitution reactions of alkylaquacobaloximes (alkyl =\%n\%C\-3H\-7, \%n\%C\-4H\-9, \%i\%C\-4H\-9, \%n\%C\-5H\-\{11\}, Br(CH\-2)\-3, PhCH\-2) by ammonia in aqueous solution were studied in the absence and presence of cyclodextrin (CD). The equilibrium constants were measured by UVvis spectroscopy. It has been found that (i) comparing with that in the absence of CD, the equilibrium constant were influenced slightly in the presence of CD, (ii) with increasing electronwithdrawing ability of the alkyl groups, the equilibrium constants were increased.\=\;

关 键 词：烷基钴肟 环糊精 平衡常数 氨取代反应 包结物 

分 类 号：O627.81[理学—有机化学] O636.12[理学—化学]