1 (6 Methyl 4 phenyl 2 sulfanyl­­idene 1,2,3,4 tetra­hydro­pyrimidin 5 yl)ethanone

Intermolecular interactions of the title compound, viewed along the a axis. Hydrogen bonds are shown as dashed lines. H atoms not involved in hydrogen bonding have been omitted..

ring; the mean planes of the acetyl substituents are twisted by 13.4 (3) and 30.1 (3) with respect to the pyrazole ring.. Intermolecular classical N—H O and weak C—H O

The two molecules in the asymmetric unit have opposite absolute configurations and are related by a noncrystallographic inversion center. Both feature intramol- ecular N—H N

In the molecule, the pyran ring adopts an envelope conformation with the O atom at the flap position. Weak intermolecular C—H O hydrogen bonding is present in the

The molecules are linked through intermolecular N—H O hydrogen bonding, forming an infinite chain parallel to the b axis..

the other conformer, the same methyl group (C13B) adopts an equatorial position on their associated cyclohexane

There is one strong intermolecular OÐH N hydrogen bond and three weak CÐ H N interactions (two intra- and one intermolecular), leading to the formation of a helical chain

The absence of disorder in the thiophene ring facilitates one of its ring C atoms to participate in the lone intermolecular C—H  O hydrogen bond present in the crystal, leading to