ligand. The chemical reduction of these ferrous dinitrogen complexes was performed in an attempt to increase the basicity of the N2 ligand enough to promote proton transfer from the pendent amine to the N2 ligand. Instead of isolating a reduced Fe(0)–N2 complex, the reduction resulted in isolation and characterization of HFe(Et2PC(H)N(Me)CH2PEt2)(PEtNMePEt), the product of oxidative addition of the methylene
在亚
铁二氮配合物中添加酸[FeX(N 2)(P Et N Me P Et)(
DMPa href=https://www.molaid.com/MS_78305 target="_blank">PM)] +(X = H,Cl或Br; P Et N Me P Et = Et 2 PCH 2 N(我)CH 2 PET 2 ;和
DMPM =我2 PCH 2 PME 2)在二
膦配体,而不是在一氧化二
配体的侧胺给出质子化。此质子化增加了ν N2 25厘米络合物的带-1并将Fe(II / I)耦合移至0.33 V,以产生更高的正电势。对于相关的羰基配合物[FeH(CO)(P Et N Me P Et)(
DMPa href=https://www.molaid.com/MS_78305 target="_blank">PM)] +,观察到了相似的IR位移和Fe(II / I)对(0.23 V)的位移。发现[FeH(P Et N Me P Et)(
DMPa href=https://www.molaid.com/MS_78305 target="_blank">PM)] +结合N 2的强度约为NH 3的三倍。计算分析表明,N 2与Fe(II)中心的配位将N 2(vs游离N 2)的碱度提高了13和20 p K a反式卤化物和
氢化物的单位。