6-(2-Methylpropyl)-4-oxo-2-sulfanylidene-1,2,3,4-tetrahydropyrimidine-5-carbonitrile

Abstract

The title thiouracil derivative, C9H11N3OS, exists in the thione form. The six atoms comprising the ring are almost coplanar [r.m.s. deviation = 0.015 Å] and the 2-methylpropyl group lies approximately perpendicular to this plane [the N—C—C—C torsion angle is 72.88 (14)°]. Linear supramolecular chains along [001] sustained by N—H...O and N—H...S hydrogen bonding feature in the crystal packing.