Biomimetic iron(iii) complexes of facially and meridionally coordinating tridentate 3N ligands: tuning of regioselective extradiol dioxygenase activity in organized assemblies
作者:Muniyandi Sankaralingam、Natarajan Saravanan、Natarajan Anitha、Eringathodi Suresh、Mallayan Palaniandavar
DOI:10.1039/c3dt52350k
日期:——
lower amount (18.3%) of the intradiol cleavage products (E/I, 3 : 1). Remarkably, in aqueous SDS micellar media, it shows exclusive extradiol cleavage products (79.4%) while all the other complexes show very low selectivity (E/I: 1, 0.03 : 1; 2, 79.4 : 0, 3, 0.06 : 1, 4, 0.06 : 1), suggesting the suitability of SDS medium for 2 to elicit exclusive extradiol cleavage. The TX-100 micellar medium also provides
四种类型为[Fe(L)Cl 3 ] 1-4的单核铁(III)配合物,其中L是三齿3N配体,例如(2-吡啶-2-基乙基)(吡啶-2-基甲基)胺(L1),(甲基)(2-吡啶-2-基乙基)(吡啶-2-基甲基)胺(L2),双(吡啶-2-基乙基)胺(L3)和(1-甲基-1 H-咪唑-已经分离出2-基甲基)(吡啶-2-基乙基)胺(L4)并作为儿茶酚双加氧酶的功能模型进行了研究。在[Fe(L2)Cl 3 ] 2中,配体L2在表面上与铁(III)配位,而在[Fe(L1)Cl 3 ] 1中与[Fe(L4)Cl 3 ] 4配体L1和L4在子午方向上配位。在DCM,CH 3 CN和SDS水溶液,CTAB和TX-100胶束介质中,观察到低能和高能儿茶酚酸铁(III)LMCT谱带(465-530、690-860 nm)的位置。铁(III)配合物的3,4-二叔丁基儿茶酚酯(DBC 2−)加合物的变化顺序为2 > 1 >