(Z)-1,5-Dimethyl-4-[(5-methylthien-2-yl)methyleneamino]-2-phenyl-1H-pyrazol-3(2H)-one

Abstract

In the title compound, C17H17N3OS, the thio­phene and pyrazolidinone rings are approximately coplanar and are linked by a C=N double bond as a conjugated system. The phenyl ring is not part of the conjugated system, and its mean plane forms a dihedral angle of 53.29 (9)° with the plane of the pyrazolidinone ring. The imine groups in neighbouring mol­ecules form π–π inter­actions, with the centres of the C=N bonds separated by 3.590 (3) Å.