Phototautomerism of triazolo-triazole scaffold
Copyright policy )Phototautomerism of triazolo-triazole scaffold
It is shown that 4-methyl-7-(4-hydroxyphenyl)-[1,2,4]-triazolo[3,2-c][1,2,4]triazole exhibits a rich photoinduced protolytic behavior: Förster cycle shows that the protonated nitrogen of the triazolo-triazole ring is a weak photoacid, with ?pKa?-3; furthermore, at moderately basic pH its deprotonated monoanion exhibits a long distance water mediated phototautomerism, in which the hydroxyl group releases a proton to solvent and a basic nitrogen of the triazolo-triazole fused ring, different from that protonated in the neutral species, is protonated by the solvent.
triazole, heterocycles, Tautomerism, photoacid, triazole, heterocycles, Photoacidity, N-rich fused ring heteroaromatics; Photoacidity; Phototautomerism, Phototautomerism, N-rich fused ring heteroaromatics, photoacid, Tautomerism
triazole, heterocycles, Tautomerism, photoacid, triazole, heterocycles, Photoacidity, N-rich fused ring heteroaromatics; Photoacidity; Phototautomerism, Phototautomerism, N-rich fused ring heteroaromatics, photoacid, Tautomerism
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