TABLE 5.

Porphyrinato core parameters (Å) for selected Fe(II) and Fe(III) meso-porphyrin complexes.

Complex	Fe-Np a	Fe-XL b	Fe-PC c	Fe-PN d	Reference
Iron(II) high-spin (S = 2) metalloporphyrins
[FeII(TpivPP)Cl]-	2.1091 (2)	2.2877 (11)	0.57	0.51	This work
[FeII(TpivPP)(N3)]-	2.094 (3)	2.078 (2)	0.52	0.46	Hachem et al. (2009)
[FeII(TpivPP)(OAc)]-	2.107 (2)	2.034 (3)	0.64	0.55	Nasri et al. (1987)
[FeII(TpivPP)(NO3)]-	2.070 (2)	2.069 (4)	0.49	0.42	Nasri et al. (2006)
[FeII(TpivPP)(NCO)]-	2.120 (2)	2.005 (3)	0.68	0.59	Dhifet et al. (2010b)
[FeII(TpivPP)(NCS)]-	2.104 (2)	2.042 (2)	0.59	0.50	Dhifet et al. (2010b)
Iron(II) low-spin (S = 0) metalloporphyrins
[FeII(TpivPP)(NO2)]-	1.970 (4)	1.849 (6)	0.17	0.13	Nasri et al. (2000b)
[FeII(TPP)(CN)2]2-	1,986 (8)	1.878 (1)	0.22	0.13	Li et al. (2008)
Iron(III) high-spin
[FeIII(TpivPP)(NCO)]	2.069 (5)	1.970 (5)	0.54	0.49	Belkhiria et al. (2005)
[FeIII(TPP)Cl]	2.070 (3)	2.211 (5)	0.57	–	Schiedt and Finnegan (1989)
[FeIII(TpivPP)Cl]	2.108 (2)	2.207 (1)	0.42	–	Dhifet et al. (2011)
[FeIII(TTP)(OAc)] e	2.067 (3)	1.898 (4)	0.52	0.48	Oumous et al. (1984)

^a The average distance between iron and nitrogen in the equatorial pyrrole.

^b The distance from iron to the axial ligand.

^c The distance from iron to the average plane formed by the 24-atom core of the porphyrin.

^d The distance from the iron center to the average plane of the four nitrogen atoms in the pyrrole.

^e TTP refers to tetratolylporphyrin.