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. Author manuscript; available in PMC: 2019 May 9.

Published in final edited form as: Chem Rev. 2018 Apr 30;118(9):4834–4885. doi: 10.1021/acs.chemrev.7b00763

Table 5.

Experimental N-hydroxyimide/imidoxyl redox potentials vs. NHE.^a

graphic file with name nihms-990055-f0016.jpg

Entry	N-Hydroxyimide Derivative	E_1/2^a	Ref.	Entry	N-Hydroxyimide Derivative	E_1/2^a	Ref.
1		0.94^b	246	9
		0.93^c	247			0.95^b	246
		1.08^d	249

2				10

		1.16^c	247			0.98^b	246

3				11

		1.01^c	247			1.00^b	246

4				12
		0.91^b	246
		1.04^d	249			1.12^b	249

5				13
		1.05^d	249
						1.03^b	246

6				14
		1.04^d	249			1.02^b	246

7				15
		1.06^d	249			0.97^b	246


8				16
						0.90^b	246
		1.19^d	250			1.13^d	249

^a

Potentials adjusted relative to NHE, as described in ref. 17–19.

^b

Experimental measurements performed with 1.7 equivalents 2,4,6-collidine in CH₃CN.

^c

Experimental measurements performed with 2 equiv 2,4,6-collidine in CH₃CN.

^d

Experimental measurements performed in 50 mM citrate buffer (pH 5).

^e

Experimental measurements performed 45 mM phosphate buffer (pH 6).²⁵⁰