4-Benzyl-6-p-tolyl-pyridazin-3(2H)-one.

ABSTRACT: The title compound, C(18)H(16)N(2)O, is a new dihydro-pyridazin-3(2H)-one derivative synthesized in one step by condensation of ?-benzyl-idene-?-tolyl-butenolide with hydrazine. The mol-ecule is not planar; the tolyl and pyridazine rings are twisted with respect to each other making a dihedral angle of 27.35?(9)° and the benzyl ring is nearly perpendicular to the pyridazine ring with a dihedral angle of 85.24?(5)°. In the crystal structure, inversion dimers arise, being linked by pairs of N-H?O hydrogen bonds. Weak C-H?O hydrogen bonds and weak offset ?-? stacking stabilize the packing. The ?-? stacking occurs between the pyridazine rings of symmetry-related mol-ecules, with a centroid-centroid distance of 3.748?Å, an inter-planar distance of 3.605?Å and a slippage of 1.024?Å.

SUBMITTER: Oubair A 

PROVIDER: S-EPMC2969805 | biostudies-other | 2009

REPOSITORIES: biostudies-other