Effects of axial pyridine coordination on a saddle-distorted porphyrin macrocycle: stabilization of hexa-coordinated high-spin Fe(III) and air-stable low-spin iron(II) porphyrinates.

Effects of axial pyridine coordination on a saddle-distorted porphyrin macrocycle: stabilization of hexa-coordinated high-spin Fe(III) and air-stable low-spin iron(II) porphyrinates.