Interaction of 5,10,15,10,15,and 2,3,12,10,15,20-tetraphenylporphyrin with manganese(II) chloride in dimethylformamide has been studied by means of spectrophotometry. The corresponding chloride acido complexes of manganese(III) has been so prepared and identified. The complexes could be reduced into manganese(II) tetraphenylporphyrinates in the presence of potassium hydroxide in dimethylformamide.