The treatment of Fe(ClO4)2·6H2O or Fe(ClO4)3·9H2O with a benzimidazolyl-rich ligand, N,N,N′,N′-tetrakis[(1-methyl-2-benzimidazolyl)methyl]-1,2-ethanediamine (medtb) in alcohol/MeCN gives a mononuclear ferrous complex, [FeII(medtb)](ClO4)2·½CH3CN·½CH3OH (1), and four non-heme alkoxide–iron(III) complexes, [FeIII(OMe)(medtb)](ClO4)2·H2O (2, alcohol = MeOH), [FeIII(OEt)(Hmedtb)](ClO4)3·CH3CN (3, alcohol = EtOH), [FeIII(OnPr)(Hmedtb)](ClO4)3·nPrOH·2CH3CN (4, alcohol = n-PrOH), and [FeIII(OnBu)(Hmedtb)](ClO4)3·3CH3CN·H2O (5, alcohol = n-BuOH), respectively. The alkoxide–iron(III) complexes all show 1) a Fe(III)–OR center (R = Me, 2; Et, 3; nPr, 4; nBu, 5) with the Fe–O bond distances in the range of 1.781–1.816 Å, and 2) a yellow color and an intense electronic transition around 370 nm. The alkoxide–iron(III) complexes can be reduced by organic compounds with a cis,cis-1,4-diene moiety via the hydrogen atom abstraction reaction.
将 Fe(
ClO4)2-6 或 Fe( )3-9 与富含
苯并咪唑的
配体 N,N,N′,N′-四[(1-甲基-2-
苯并咪唑基)甲基]-1、2-
乙二胺(medtb)在醇/MeCN 中的反应生成单核亚
铁络合物 [FeII(medtb)]( )2-½CH3CN-½CH3OH (1)、以及四种非血红素氧化烷基
铁(III)配合物:[FeIII(OMe)(medtb)]( )2-
H2O(2,醇 = MeOH)、[FeIII(OEt)(Hmedtb)]( )3-CH3CN(3,醇 = EtOH)、分别是[FeIII(OnPr)(Hmedtb)]( )3-nPrOH-2CH3CN(4,醇 = n-PrOH)和[FeIII(OnBu)(Hmedtb)]( )3-3CH3CN- (5,醇 = n-BuOH)。烷氧化物-
铁(III)配合物均显示出:1)Fe(III)-OR 中心(R = Me,2;Et,3;nPr,4;nBu,5),Fe-O 键距离在 1.781-1.816 Å 范围内;2)黄色和 370 nm 附近的强烈电子转变。烷
氧化铁(III)配合物可以通过氢原子抽取反应被具有顺式、顺式-1,4-二烯分子的有机化合物还原。