1-Methyl-3-phenyl­imidazolidine-2-thione

The asymmetric unit of the title cyclic thio­urea derivative, C₁₀H₁₂N₂S, comprises two mol­ecules, each of which has a twist about the CH₂—CH₂ bond within the five-membered ring. The major difference between the independent mol­ecules is manifested in the relative orientations of the five- and six-membered rings [dihedral angles between the least-squares planes = 28.03 (11) and 41.54 (11)°]. A network of C—H...π inter­actions consolidates the three-dimensional crystal packing.