Reduction of [Fe III (tfpp)Cl][tfpp = 5,10,15,20-tetrakis(pentafluorophenyl)porphyrinate] by azaferrocene. The crystal structure of [Fe II (tfpp){Fe(C5H5)(C4H4N)}2]

Abstract

Azaferrocene reacts with chloro[5,10,15,20-tetrakis(pentafluorophenyl)porphyrinato]iron(III) to give a low-spin iron(II) porphyrin, [FeII(tfpp){Fe(C5H5)(C4H4N)}2], the crystal and molecular structure of which has been determined; while air-stable in the solid state, in solution it loses co-ordinated azaferrocene and (under aerobic conditions) undergoes oxidation to FeIII.