with the energies of the highest occupied molecular orbitals EHOMO. It has been found that the Eoxp values are linearly correlated with logarithm of the rate constants for the electron transfer reactions with inorganic oxidants such as [Fe(bpy)3]3+ and [Co(bpy)3]3+ (bpy=2,2′-bipyridine) in ...
[Rh(p-MeOC6H4NC)4]+ 的 CH3CN 溶液的循环伏安图显示三个阳极电流峰,对应于单体、二聚体和三聚体的氧化,反向扫描时没有阴极波。在这种不可逆循环伏安图中,测定了各种 Rh(I) 单体和低聚物如 [Rh(RNC)4]+、[Rh2(RNC)8]2+、[Rh2(dppm)2( RNC)4]2+、[Rh2(dicp)4]2+、[Rh3(RNC)12]3+和[Rh4(dicp)8]4+(R=p-MeOC6H4和Ph等;dppm=双(
二苯基膦基)
甲烷,dicp=
1,3-二异氰基丙烷)。阳极峰电位 Eoxp 主要随 Rh(I) 配合物的低聚程度而变化,按照单体>二聚体>三聚体>四聚体的顺序降低,与最高占据分子轨道 EHOMO 的能量平行。