Zinc(II) complexes of a versatile heptadentate ligand as phosphohydrolase structural and functional mimics
作者:Steven Batha、Hadi Arman、Oleg V. Larionov、Ghezai T. Musie
DOI:10.1016/j.ica.2019.119077
日期:2019.11
mono-nuclear [Zn(H2O)6][1] and a di-nuclear zinc (NMe4)2[2] complexes of a carboxylate-rich ligand, N,N′-Bis[2-carboxybenzomethyl]-N,N′ -Bis[carboxymethyl]-1,3-diaminopropan-2-ol (H5ccdp) have shown catalytic activity towards hydrolysis of the phosphoester bonds in bis(4-nitrophenyl) phenylphosphonate, BNPPP. Kinetic measurements for the zinc(II) complexes, using spectrophotometric techniques in DMSO
摘要富含羧酸盐的配体N,N'-Bis [2-羧基苯甲基] -N的单核[Zn(H2O)6] [1]和双核锌(NMe4)2 [2]配合物, N'-双[羧甲基] -1,3-二氨基丙烷-2-醇(H5ccdp)已显示出对双(4-硝基苯基)苯基膦酸酯BNPPP中的磷酸酯键水解的催化活性。为了研究锌(II)配合物的动力学,使用分光光度法在DMSO中进行了研究,以研究金属-金属协同性与金属-氢键对BNPP中磷酸酯键裂解速率的影响。结果表明,与未催化水解的BNPPP相比,(NMe4)2 [2]配合物显示出103倍的速率增强,而[[Zn(H2O)6] [1])仅显示450倍的速率增强。相同的反应条件。根据本研究获得的结构和活性信息,