Table 1.

The lipophilicity expressed as TLC retention factor, R_f (Sigma/Aldrich silica-gel plates with KNO₃-saturated H₂O:H₂O:acetonitrile=1:1:8)¹⁷ and partition between n-octanol and water, P_OW¹⁷, k_cat for O₂^·− dismutation (at (25 ± 1)°C, 0.05 M phosphate buffer, pH 7.8), ²,¹⁸,¹⁹, and this work and the metal-centered reduction potential for Mn^IIIP/Mn^IIP redox couple, E_½, in mV vs NHE (in 0.05 M phosphate buffer, pH 7,8, 0.5mM MnP, 0.1 M NaCl).²,¹⁸,¹⁹ and this work

Porphyrin	Rf	log POW	E½	log kcat
MnTM-2-PyP	0.03	−7.86	+220	7.79
MnTE-2-PyP	0.06	−6.89	+228	7.76
MnTnPr-2-PyP	0.11	−5.93	+238	7.38
MnTnBut-2-PyP	0.19	−5.11	+245	7.25
MnTnHex-2-PyP	0.38	−2.76	+314	7.48
MnTnHep-2-PyP	0.46	−2.10	+342	7.65
MnTnOct-2-PyP	0.49	−1.24	+367	7.71
MnTM-3-PyP	0.05	−6.96	+52	6.61
MnTE-3-PyP	0.10	−5.98	+54	6.65
MnTnPr-3-PyP	0.22	−5.00	+62	6.69
MnTnBut-3-PyP	0.40	−4.03	+64	6.69
MnTnHex-3-PyP	0.55	−2.06	+66	6.64