The complete reversal of the ligand field strength of ClO4â and CF3SO3â in the magnetochemical series is observed in a diiron(III)bisporphyrin. While ClO4â, as the axial ligand, gives a typical high-spin complex, just twisting the conformation of the porphyrin macrocycle gives properties of a pure intermediate-spin state with CF3SO3â, although the axial ligand strengths suggest the reverse order of spin stabilization.
在二
铁(III)双
卟啉中观察到磁
化学系列中
ClO4-和CF3SO3-的
配体场强完全反转。虽然 – 作为轴向
配体,给出了典型的高自旋配合物,但仅扭转
卟啉大环的构象就给出了具有 CF3SO3– 的纯中间自旋态的性质,尽管轴向
配体强度表明了相反的顺序自旋稳定。