. 2014 Oct 1;136(42):15034–15045. doi: 10.1021/ja508361h

Table 3. Experimental Rates and Driving Forces, and Calculated Reorganization Energies and H_DA Values, for ET between T1/T2 Sites in Different NiRs and NiR Axial Ligand Variants.

enzyme	k_f (298 K)	ΔG⁰ (eV)	λ_T^c	H_DA (cm^–1)^d	ref
Axn (blue)	185	0.009	1.34	∼0.7	(30, 60)
Axg (blue)^a	290	0.040	1.34	∼1.1	(33)
Axn (blue)^a	360	0.035	1.34	∼1.2	(33)
Ac (green)^a	1100	–0.035	1.38	∼1.3	(33)
Ac (green)	335	0.019	1.38	∼1.2	(30, 60)
Af (green)	1696 ± 73	–0.020	1.38	∼1.9	(31)
Af M150G (blue)	18 ± 4	0.077	1.34	∼0.4	(31)
Af M150T^b (blue)	11 ± 4	0.106	1.34	∼0.8	(31)
Af M150H (green)	2333 ± 163	–0.126	1.58	∼2.3	(31)

T not reported, 298 K used here.

T = 275 K.

Values estimated in this work as outlined in the text.

Values calculated in this work using the Marcus expression and the values of k_f, ΔG⁰, and λ_T given in the table.

Table 3. Experimental Rates and Driving Forces, and Calculated Reorganization Energies and HDA Values, for ET between T1/T2 Sites in Different NiRs and NiR Axial Ligand Variants.