辅酶B_(12)模型化合物研究 Ⅹ.Costa型模型化合物的合成、表征及电化学性质研究  

STUDIESON COENZYME B_(12) MODEL COMPLEXES X.SYNTHESIS,CHARACTERIZATION AND EL ECTROCHEMICAL PROPERTIESOF COSTA- TYPE ORGANCOBAL T B_(12) MODELS

作　　者：刘君[1] 罗来斌[1] 向平 陈慧兰[1] 

机构地区：[1]南京大学化学系,配位化学国家重点实验室,南京210093

出　　处：《无机化学学报》1996年第2期161-166,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助课题

摘　　要：合成了以 N,N′-双 (2 ,3-丁二酮 - 2 -亚胺 - 3-肟 )丙二胺为平面配体的烷基钴 Schiff碱一肟类 (Costa型 )模型化合物 [RCo(DO) (DOH) pn(H2 O) ] X,(R=n- C3 H7,n- C4H9,i- C4H9,n-C5H1 1 ,c- C6H1 1 ,CH2 C6H5.X=Cl O4-,PF-6)。用元素分析、紫外可见光谱和 1 H NMR进行了表征 ,并用循环伏安法研究了 [RCo(DO) (DOH) pn.H2 O] .Cl O4(R为上述六种烷基 )化合物的电化学性质 ,表明随烷基 R推电子能力增强 ,其氧化还原电位变负。Several Costa- type organcobalt complexes([RCo(DO) (DOH) pn(H2 O) ]X,where R=n- C3 H7,n- C4H9,n- C5H1 1 ,i- C4H9,c- C6H1 1 ,CH2 C6H5,X=Cl O-4 ,PF-6) ,containing the equatorical ligand N,N- propanediylbis(2 ,3- butanedione 2 - imine- 3- oxime) have been prepared. They were characterized by elementary analysis,UV/ vis and1 H NMR spectroscopy. Their electrochemical properties were studied by cyclic voltammetry. It′s concluded that values of potentials are decreased with the enhancement of electron- donoring ability of axial R groups.

关 键 词：辅酶B12 烷基钴配合物 循环伏安法 钴-碳键 

分 类 号：Q552[生物学—生物化学] O614.812[理学—无机化学]