Collect. Czech. Chem. Commun. 1982, 47, 2882-2889

Acid-base properties of 1,3-diphenyl-5-(1H-tetrazol-2-yl)formazan and 1,3-diphenyl-5-(2H-1,2,4-triazol-3-yl)formazan

Nadezhda Likhareva, Ladislav Šůcha and Miloslav Suchánek

Department of Analytical Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6


Two new compounds from the formazan series, viz. 1,3-diphenyl-5-(1H-tetrazol-2-yl)formazan and 1,3-diphenyl-5-(2H-1,2,4-triazol-3-yl)formazan, were prepared, and the dissociation constants and molar absorptivities of all of their acid-base species were determined spectrophotometrically employing the SPEKTFOT computer program.