Single electron and H+ coupled double electron transfer reductions of nitrosyl complexes: model reactions for key steps of the NO3− ⇋ NH3 conversion in the nitrogen cycle
作者:D. Sellman
DOI:10.1016/0022-328x(89)87080-9
日期:1989.8
[Fe(NO)(′NHS′4)]0 showing a strongly bent FeNO group and weakened [Fe(′NHS′4)] core bonds. The reduction of [Mo(NO)2(′S′4)] (′S′4 = dianion of 2,3,8,9-dibenzo-1,4,7,10-tetrahiadecene) by hydrazine serving both as electron and proton source, yields [MO(NH2O)(NO)(′S′4)] having a side-on bound hydroxylaminyl ligand. By strutural and spectroscopic investigations, this reduction is shown to be a (2e− + 2H+) reaction
金属硝酸盐催化生物硝酸盐与氨气相互转化的各个氧化还原步骤。为了找到证明从一氧化氮到羟胺的关键步骤之一的化学模型反应,合成并研究了具有铁或钼硫核的亚硝酰基配合物。18电子NO络合物的单电子还原的[Fe(NO)('N ħ S' 4)] +('N ħ S' -2- 4 =二价阴离子的(2-(2-巯基苯基)硫基)乙基)胺),得到19种电子的[Fe(NO)('N ħ S' 4)] 0表示强烈弯曲FENO组和减弱的[Fe('N ħ S' 4)]核心债券。[沫(NO)的还原2('S' 4)]('S' 4 -2,3,8,9-二苯并1,4,7,10- tetrahiadecene的二价阴离子=)通过肼既用作电子和质子源,产率[MO(NH 2 O)(NO)('S' 4)]具有侧面上结合的hydroxylaminyl配体。通过strutural和光谱研究,这种减少被示出为一个(2E - + 2H +)反应,其似乎是由莫中心的配位数的增加来促进。