Synthesis and Structural Characterization of Iron(II) Complexes with Tris(imidazolyl)phosphane Ligands: A Platform for Modeling the 3‐Histidine Facial Triad of Nonheme Iron Dioxygenases
作者:Michael M. Bittner、Jacob S. Baus、Sergey V. Lindeman、Adam T. Fiedler
DOI:10.1002/ejic.201101282
日期:2012.4
Several monoiron(II) complexes containing tris(imidazolyl)phosphane (TIP) ligands have been prepared and structurally characterized by using X-ray crystallography and NMR spectroscopy. Two TIP ligands were employed: tris(2-phenylimidazol-4-yl)phosphane (4-TIPPh) and tris(4,5-diphenyl-1-methylimidazol-2-yl)phosphane (2-TIPPh2). These tridentate ligands resemble the 3-histidine (3His) facial triad found
已经制备了几种含有三(咪唑基)磷烷 (TIP) 配体的单铁 (II) 配合物,并使用 X 射线晶体学和核磁共振光谱对其进行了结构表征。使用了两种 TIP 配体:三(2-苯基咪唑-4-基)膦(4-TIPPh)和三(4,5-二苯基-1-甲基咪唑-2-基)膦(2-TIPPh2)。这些三齿配体类似于最近在某些非血红素铁双加氧酶的活性位点中发现的 3-组氨酸 (3His) 面部三联体。已报道的三种复合物被设计为用作模拟 3His 双加氧酶的酶 - 底物中间体的物种的方便前体;因此,每个都包含一个 [Fe(κ3-TIP)]2+ 单元,其中剩余的配位点被容易置换的配体占据,例如溶剂分子和/或羧酸盐基团。