Zenon Woźniak

1-Methyl-2-(4-methyl­phen­yl)-4-morpholinopyridazine-3,6(1H,2H)-dione

The structure analysis of the title compound, C16H19N3O3, has been undertaken in order to facilitate the interpretation of 1H and 13C NMR data and to determine the position of the morpholine residue in this nucleophilic substitution product. The main result is that the morpholine group, with a chair conformation, is connected at the 4-position of the pyridazine ring. The benzene and pyridazine rings make a dihedral angle of 62.17 (5)°. Molecules are linked into a two-dimensional network by non-classical C—H⋯O hydrogen bonds, in which O atoms serve as double or triple acceptors.