The tautomeric structures of 3(5),3′(5′)-azopyrazole [(E)-1,2-di(1H-pyrazol-3(5)-yl)diazene)]: The combined use of NMR and electronic spectroscopies with DFT calculations

1. López-Tarifa, P.
2. Sánchez-Sanz, G.
3. Alkorta, I.
4. Elguero, J.
5. Sanz, D.
6. Perona, A.
7. Claramunt, R.M.