Isolation of σ-alkyl-iron(III) or carbene-iron(II) complexes from reduction of polyhalogenated compounds by iron(II)-porphyrins: the particular case of halothane CF3CHClBr

Abstract

Fe^II(TPP)(TPP = tetraphenylporphyrin), in the presence of an excess of sodium dithionite, reacts with CF₃CCl₃ and halothane CF₃CHClBr, leading respectively to the carbene Fe^II(TPP)(CCICF₃) and σ-alkyl-Fe^III(TPP)-(CHCICF₃) complexes, the latter being the first isolated σ-alkyl-Fe^III(porphyrin) complex involving a halogen substituent on the carbon bound to iron.