Ligand Effects on Hydrogen Atom Transfer from Hydrocarbons to Three-Coordinate Iron Imides
作者:Ryan E. Cowley、Patrick L. Holland
DOI:10.1021/ic300870y
日期:2012.8.6
A new β-diketiminate ligand with 2,4,6-tri(phenyl)phenyl N-substituents provides protective bulk around the metal without exposing any weak C–H bonds. This ligand improves the stability of reactive iron(III) imido complexes with Fe═NAd and Fe═NMes functional groups (Ad = 1-adamantyl; Mes = mesityl). The new ligand gives iron(III) imido complexes that are significantly more reactive toward 1,4-cyclohexadiene
一种具有2,4,6-三(苯基)苯基N-取代基的新型β-二酮配体,可在金属周围提供保护性主体,而不会暴露任何弱C–H键。该配体提高了具有Fe═NAd和Fe═NMes官能团(Ad = 1-金刚烷基; Mes =甲基)的反应性铁(III)亚氨基配合物的稳定性。新的配体产生的铁(III)酰亚胺基络合物比之前报道的2,6-二异丙基苯基二酮戊二酸酯变体对1,4-环己二烯的反应性强得多。X射线晶体结构分析暗示FeesN–C弯曲,更长的Fe═N键和更多的金属接触是C–H键激活率增加的潜在原因。