Synthesis, structure, spectra and reactivity of iron(iii) complexes of imidazole and pyrazole containing ligands as functional models for catechol dioxygenases
作者:Thirumanasekaran Dhanalakshmi、Eringathodi Suresh、Mallayan Palaniandavar
DOI:10.1039/b903602d
日期:——
A series of new 1 : 1 iron(iii) complexes of the type [Fe()Cl(3)], where is a tridentate 3N donor ligand, has been isolated and studied as functional models for catechol dioxygenases. The ligands (1-methyl-1H-imidazol-2-ylmethyl)pyrid-2-ylmethyl-amine (), N,N-dimethyl-N'-(1-methyl-1H-imidazol-2-ylmethyl)ethane-1,2-diamine () and N-(1-methyl-1H-imidazol-2-ylmethyl)-N'-phenylethane-1,2-diamine () are
[Fe()Cl(3)]类型的一系列新的1:1铁(iii)配合物(其中是三齿3N供体配体)已被分离出来,并作为儿茶酚双加氧酶的功能模型进行了研究。配体(1-甲基-1H-咪唑-2-基甲基)吡啶-2-基甲基胺(),N,N-二甲基-N'-(1-甲基-1H-咪唑-2-基甲基)乙烷-1 ,2-二胺()和N-(1-甲基-1H-咪唑-2-基甲基)-N'-苯乙烷-1,2-二胺()是线性的,而配体是三(1-吡唑基)甲烷(),三(3,5-二甲基-1-吡唑基)甲烷()和三(3-异丙基吡唑基)甲烷是三脚架的。所有配合物均已通过光谱和电化学方法进行了表征。已经成功确定了双核儿茶酚酸加合物[Fe()(TCC)](2)O的X射线晶体结构,其中TCC(2-)是四氯儿茶酚酸的二价阴离子。在该络合物中,两个铁原子均由一个mu-oxo基桥接,每个铁原子中心均具有扭曲的八面体配位几何形状,其中配体在表面上被配位,其余配位位点被TCC(2)占据。