Cocrystallization of two tautomers: 4-(1-{[4-(dimethyl-amino)benzyl-idene]- hydrazono}eth-yl)benzene-1,3-diol and 6-[(E)-1-{[4-(dimethyl-amino)benzyl-idene] -hydrazino}ethyl-idene]-3-hy-droxy-cyclo-hexa-2,4-dien-1-one (1/1)

Article abstract of DOI:10.1107/S0108270109006696

Two different tautomeric forms of a new Schiff base, C17H19N3O2· C17H19N3O2, are present in the crystal in a 1:1 ratio, namely the enol-imine form 4-(1-{[4-(dimethyl-am-ino)benzyl-idene]-hydra-zono}-eth-yl)benzene-1,3-diol and the keto-amine form 6-[(E)-1