1 PNI Tetra[N-methyl-pyridyl] porphyrin-nickel 1.000 2 POH (1z,4z,9z,15z)-5,10,15,20-tetrakis(1-methylpyridin-1-ium-4-yl)-21,23-dihydroporphyrin 0.981 3 PCU Cu(II)meso(4-N-tetramethylpyridyl)porphyrin 0.963 4 7OH Fe-tetra(4-pyridyl)porphyrin 0.889 5 J7U Chromium-5,10,15,20-tetraphenylporphyrin 0.759 6 J7X Mn-5,10,15,20-tetraphenylporphyrin 0.759 7 J83 Co-5,10,15,20-tetraphenylporphyrin 0.759 8 MQP [5,10,15,20-tetraphenylporphyrinato(2-)-kappa~4~N~21~,N~22~,N~23~,N~24~]iron 0.759