Nonheme iron–thiolate complexes as structural models of sulfoxide synthase active sites
作者:Danushka M. Ekanayake、Anne A. Fischer、Maya E. Elwood、Alexandra M. Guzek、Sergey V. Lindeman、Codrina V. Popescu、Adam T. Fiedler
DOI:10.1039/d0dt03403g
日期:——
aromatic or aliphatic thiolate ligands yielded the five-coordinate, high-spin Fe(II) complexes [FeII(LA)(SMes)]BPh4 (1) and [FeII(LB)(SCy)]BPh4 (2), where SMes = 2,4,6-trimethylthiophenolate and SCy = cyclohexanethiolate. X-ray crystal structures revealed that 1 and 2 possess trigonal bipyramidal geometries formed by the N4S ligand set. In each case, the thiolate ligand is positioned cis to an imidazole
已经制备了两种单核铁 ( II )-硫醇盐复合物,它们代表了非血红素铁酶 EgtB 和 OvoA 的结构模型,它们在硫代组氨酸化合物的生物合成中催化 O 2依赖性碳硫键的形成。此处报道的一系列 Fe( II ) 配合物具有三足 N 4螯合物(L A和L B),其中包含吡啶基和咪唑基供体(L A = (1 H -imidazol-4-yl)- N , N -bis( (吡啶-2-基)甲基)甲胺;L B = N , N-双((1-甲基咪唑-2-基)甲基)-2-吡啶基甲胺)。与单齿芳香族或脂肪族硫醇盐配体进一步配位产生了五配位的高自旋 Fe( II ) 配合物 [Fe II ( L A )(SMes)] BPh 4 ( 1 ) 和 [Fe II ( L B )(SCy) ]BPh 4 ( 2 ),其中 SMes = 2,4,6-三甲基苯硫酚盐,SCy = 环己硫醇盐。X 射线晶体结构显示1和2具有由