Synergic effect of two metal centers in catalytic hydrolysis of methionine-containing peptides promoted by dinuclear palladium(ii) hexaazacyclooctadecane complex
作者:Gaosheng Yang、Ren Miao、Yizhi Li、Jing Hong、Chuenmei Zhao、Zijian Guo、Longgen Zhu
DOI:10.1039/b500210a
日期:——
The two Pd(II) ions are 3.09 Å apart from each other. The dinuclear Pd(II) complex cations [Pd2(μ-OH)([18]aneN6)]3+ and [Pd2(H2O)(OH)([18]aneN6)]3+ can efficiently catalyze hydrolysis of the amide bond involving the carbonyl group of methionine in methionine-containing peptides with turnover number of larger than 20. In these hydrolytic reactions, the two Pd(II) ions are synergic; one Pd(II) ion anchors
通过[Pd 2([18] aneN 6)Cl 2 ](ClO 4)2 (其中[18] aneN 6为1,4,7,10,13,16-六氮杂环十八烷)与AgBF 4反应获得的物质由...决定电喷雾电离质谱 (电喷雾质谱)是三种主要类型的双核Pd(II)配合物的平衡混合物阳离子,[Pd 2(μ-O)([18] aneN 6)] 2 +,[Pd 2(μ-OH)([18] aneN 6)] 3+和[Pd 2(H 2 O)(OH) ([18] aneN 6)] 3+,在水溶液中。羟基基团桥接的[Pd 2(μ-OH)([18] aneN 6)] 3+是占主导地位的物种,其晶体结构已获得。[Pd 2(μ-OH)([18] aneN 6)](ClO 4)3的晶体结构表明,双核络合物中的每个Pd(II)离子四配位为三个氮原子以及一个变形的方形构型的羟基基团桥。两个Pd(II)离子彼此相距3.09Å。双核钯(II)配合物阳离子[Pd