other binds to the same copper(II) atom in an anisobidentate geometry. The trinuclear complex, which is formulated as [Cu3II(L)(H2O)n(OH)6−n]n+ in aqueous solution, is observed to cleave the plasmid pBR322 efficiently, in the presence of hydrogen peroxide or 3-mercaptopropionic acid (MPA). The reaction in the presence of MPA is shown to be O2-dependent, and is not inhibited by hydroxyl radical scavengers
摘要合成了具有新型三核
配体的新型三核
铜(II)配合物,并对其结构进行了表征,并研究了其与质粒pB
R322的反应性。
配体L基于三(2-
氨基乙基)胺,其中
伯胺基团各自被两个2-
吡啶基甲基基团取代。三核复合物[Cu3(L)(
NO3)2(
H2O)3]( )4·5 (C42H64N16O26Cu3)在单斜P2 1 c空间群中结晶,a = 19.357(5)A,b = 12.548(4) )A,c = 23.765(5)A,β= 102.46°,V = 5636(2)A 3,Z = 4。尽管[Cu3(L)( )2( )3] 4+中的三个
铜离子均与L的三齿N3部分结合,但由于“中心”烷基胺氮的配位,结构不对称生成单个
铜(II)离子。此外,其余两个
铜(II)离子配位不同的外源
配体;一个
铜(II)离子配位两个
水分子,而第二个结合两个
硝酸根离子。有趣的是,一种
硝酸盐以单齿方式配位,而另一种以异