2--1,3-dithiolane, 2--1,3-dithiole and 2--1-indenylidene>-1,3-dithiolane

Article abstract of DOI:10.1107/S056774088200627X

The crystal and molecular structures of the title compounds have been determined. (I) C18H13NO2S3 is monoclinic, space group P2₁/c with a = 11.584 (6), b = 10.935 (7), c = 16.173 (8) Angstroem, β = 121.5 (3) deg, U = 1746 Angstroem³, Z = 4, D_c = 1.36 g cm^-3, F(000) = 768, μ(Cu Kα) = 38 cm^-1. (II) C18H11NO2S3 is triclinic, space group P<*>, with a = 10.782 (5), b = 8.40 (1), c = 10.501 (6) Angstroem, α = 107.95 (5), β = 69.23 (1), γ = 109.0 (1) deg, U = 820.6 Angstroem³, Z = 2, D_c = 1.40 g cm^-3, F(000) = 380, μ(Cu Kα) = 41 cm^-1. (III) C24H20S4 is monoclinic, space group P2₁/n, with a = 12.23 (1), b = 7.58 (1), c = 23.43 (2) Angstroem, β = 105.96 deg, U = 2088.6 Angstroem³, Z = 4, D_c = 1.39 g cm^-3, F(000) = 912, μ(Cu Kα) = 40 cm^-1.Refinement for (I), (II) and (III) converged at R = 0.047, 0.069 and 0.057 for, respectively, 1852, 1486 and 1600 unique reflexions above background.In each case the five-membered dithio ring is twisted slightly out of the plane of the indene.The nitrophenylthio group in (I) and (II) and the second indene group in (III) are twisted by 72 +/- 5 deg from the indene plane.