5-tert-Butylthiazolidine-2-thione and 5-Phenylthiazolidine-2-thione

In the title compounds, C₇H₁₃NS₂, (I), and C₉H₉NS₂, (II), the heterocycle adopts a half-chair conformation with a torsion angle τ = S1—C5—C4—N3 equal to 27.5 (4)° in (I) and 30.0 (3)° in (II). In both crystals, a hydrogen bond between the thione group and the N atom is observed, the corresponding S2...N3 distance being equal to 3.367 (8) Å in (I) and 3.376 (9)Å in (II).

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