Integrated Study of the Dinitrobenzene Electroreduction Mechanism by Electroanalytical and Computational Methods

Table 2

Products of electrolysis (5 mL of solutions was used) at the potentials of limiting current of the first electron transfer in the presence of proton donors (DH). Yields was measured by HPLC technique.

Substrate (5 mmol⋅l^−1)	DH (50 mmol⋅l^−1)	Product 1 (yield)	Product 2 (yield)
1,2-DNB	benzoic acid	2-NPHA (64%)	2-NA (12%)
2-NNB	−//−	2-NPHA (80%)	2-NA (6%)
2-NPHA	none	2-NPHA anion (49%)	2-NA (30%)
1,4-DNB	benzoic acid	4-NPHA (88%)	—
4-NNB	−//−	4-NPHA (28%)	4,4′-DNAB (48%)
4-NPHA	−//−	4-NA (66%)	—
4-NPHA	none	4-NPHA anion (49%)	4-NA (20%)