Table 5.

Solid-State Mössbauer Parameters for Five-Coordinate, High-Spin Imidazole-Ligated Iron(II) Porphyrinates and Related Species.

Complex	ΔEQa	δFea	ηb	Γc	T, K	ref.
[Fe(OEP)(2-MeHIm)]·(1,10-phen)	−1.93	0.94	0.76	0.43	4.2	tw
[Fe(TPP)(2-MeHIm)]·(1,10-phen)	−2.12c	0.90		0.30	20	tw
[Fe(OEP)(1,2-Me2Im)]	−2.19	0.92	0.50	0.37	4.2	16
[Fe(OEP)(2-MeHIm)]	−1.94	0.90	0.48	0.41	4.2	16
[Fe(Tp-OCH3PP)(1,2-Me2Im)]	−2.44	0.95	0.68	0.46	4.2	14
[Fe(Tp-OCH3PP)(2-MeHIm)]	−2.18	0.94	0.58	0.58	4.2	14
[Fe(TPP)(1,2-Me2Im)]	−1.93	0.92	0.53	0.44	4.2	14
[Fe(TTP)(2-MeHIm)]	−1.95	0.85	0.63	0.42	4.2	14
[Fe(TTP)(1,2-Me2Im)]	−2.06	0.86	0.58	0.43	4.2	14
[Fe(TPP)(2-MeHIm)]	−2.40	0.92	0.8	0.50	4.2	13
[Fe(TPP)(2-MeHIm)(2-fold)	−2.28	0.93	0.8	0.31	4.2	41
[Fe(TPP)(1,2-Me2Im)]	−2.16	0.92	0.7	0.25	4.2	41
[Fe((Piv2C8P)(1-MeIm)]	−2.3d	0.88	0.40	0.40	4.2	50
deoxyHb	−2.40	0.92	0.7	0.30	4.2	41
deoxyMb	−2.22	0.92	0.7	0.34	4.2	41
[Fe(TPP)(2-MeHIm)] (Mol. 1)	−2.40e	0.92	0.90	0.37	4.2	21
[Fe(TPP)(2-MeHIm)] (Mol. 2)	+2.94e	0.97	0.71	0.58	4.2	21
[K(222)][Fe(OEP)(2-MeIm −)]	+3.71	1.00	0.22	0.31	4.2	15
[K(222)][Fe(TPP)(2-MeIm−)]	+3.60	1.00	0.02	0.32	4.2	15
[Fe(TPpivP)(2-MeIm)]−	+3.51f	0.97			77	39
[Fe(OC6H5)(TPP)]−	+4.01	1.03	0.25	0.38	4.2	51
[Fe(O2CCH3)(TPpivP)]−	+4.25	1.05	0.30	0.30	4.2	52
[Fe(OCH3)(TPpivP)]−	+3.67f	1.03		0.40	4.2	53
[Fe(OC6H5)(TPpivP)]−	+3.90f	1.06		0.38	4.2	53
[NaC12H24O6][Fe(TPpivP)(SC6HF4)]	+2.38f	0.84		0.28	4.2	54
[Na(222)][Fe(TpivPP)(SC6HF4)]	+2.38f	0.83		0.32	4.2	54
[Fe(TpivPP)(SC2H5)]−	+2.18	0.83	0.80	0.30	4.2	54
[Fe(TpivPP)Cl]−	+4.36f	1.01		0.31	77	55

^amm/s.

^bAsymmetry parameter.

^cLine width, FWHM.

^dSign not determined experimentally, presumed negative.

^eSign is based on a best fit. Because of the complexity of this two-site model, the set of parameters that result in this fit are not necessarily unique.

^fSign not determined experimentally, presumed positive.