proposed roles in biological and chemical catalysis. However, there are few examples of monomeric complexes with terminal oxo ligands, especially those with oxomanganese(IV) units. A oxomanganese(IV) complex has been prepared from [MnIIIH3buea(O)]2- ([H3buea]3-, tris[(N‘-tert-butylureaylato)-N-ethylene]aminato), a monomeric MnIII−O complex in which the oxo ligand arises from cleavage of dioxygen. Treating
长期以来,人们一直在研究
锰氧配合物,因为它们在
生物和
化学催化中的作用。然而,具有末端氧代
配体的单体配合物的例子很少,尤其是具有氧代
锰 (IV) 单元的单体配合物。已从 [MnIIIH3buea(O)]2- ([H3buea]3-, 三[(N'-叔丁基
脲基)-N-亚乙基]
氨基) 制备氧
锰 (IV) 配合物,单体 MnIII-O 配合物在其中氧
配体由分子氧的裂解产生。[MnIIIH3buea(O)]2- 用 [Cp2Fe]BF4 在 -45 °C 的
DMF 或室温下的
DMSO 中处理产生 [MnIVH3buea(O)]-:λmax = 635 nm;ν(Mn−16O) = 737 cm-1;ν(Mn−18O) = 709 cm-1;g = 5.15, 2.44, 1.63, D = 3.0 cm-1, E/D = 0.26, aMn = 66 G (A = 190
MHz)。这些光谱特性支持分配具有