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. Author manuscript; available in PMC: 2012 Feb 9.
Published in final edited form as: J Am Chem Soc. 2011 Jan 5;133(5):1274–1277. doi: 10.1021/ja109923a

Table 1.

Redox potentials for (iPrBIP)FeII and related nonheme FeII complexes.

Compound E1/2 (ΔEpp)a O2
reactivity
[(iPrBIP)FeII(SPh)(Cl)] 1 −0.173b (0.114) (r) yes
[(iPrBIP)FeII(SPh)(OTf)] 2 −0.372b (0.149) (r) yes
[(iPrBIP)FeII(Cl)2] 5 0.025b (0.153) (r) no
[(iPrBIP)FeII(OTf)2] 6 0.613b,c (ir) no
[(TMC)FeII(OTf)2]d −0.14e (qr) yes
[(TMC)FeII(OTf)2]d 0.02f (r) no
[(TPA)FeII]2+, d,g 0.36h (r) no
a

V vs Fc+/Fc; ΔEpp = peak-to-peak separation; r = reversible, ir = irreversible, qr = quasi-reversible.

b

In CH2Cl2, scan rate of 0.1 V/s.

c

Anodic peak potential.

e

In MeCN/THF (1:1).

f

In MeCN/CH2Cl2 (1:1).

g

TPA: tris(2-pyridylmethyl)amine.

h

In neat MeCN.