【摘要】 ０ＩｎｔｒｏｄｕｃｔｉｏｎＣｙｃｌｏｄｅｘｔｒｉｎｓ（ＣＤｓ），ａｒｅｃｙｃｌｉｃｏｌｉｇｏｓａｃｃｈａｒｉｄｅｓｗｉｔｈｓｉｘ（α），ｓｅｖｅｎ（β）ａｎｄｅｉｇｈｔ（γ）Ｄ（＋）－ｇｌｕｃｏｐｙ－ｒａｎｏｓｅｕｎｉｔｓ．Ｔｈｅｙｈａｖｅｂｅｅｎｐ...更多还原

【Abstract】 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.\=\;更多还原