1. Reactions of tetrasulfur tetranitride with bromomethyl ketones. One pot synthesis of 3,5-diaroyl- and 3,5-diacyl-1,2,4-thiadiazoles
2. J. Cho and K. Kim, J. Chem. Soc., Perkin Trans. 1, 2345 (1993).
3. Reactions of Monohalomethyl Aryl Ketoximes with Tetrasulfur Tetranitride: Much Improved Synthesis of 3-Aryl-1,2,5-thiadiazoles
4. Crystal data for 2a: C8H6N3F3S2, M = 265.27, Triclinic, space group. P (No. 2), a = 7.715 (3), b = 15.594 (5), c = 15.598 (4) Å, V = 1582.3 (1.0) Å, Z = 6 (3 molecules per an asymmetric unit), Dc = 1.67 gcm−1, μ = 2.7 cm−1. Yellowish green crystals of 2a were obtained from hexane/cyclohexane solution. A crystal of dimensions 1.12 × 0.65 × 0.25 mm was sealed in a glass capillary. Measurements were made on an Enraf-Nonius CAD 4 diffractometer at room temperature with a graphite monochromator and MoKα radiation. The intensities of 4153 reflections were measured (0 ≤ h ≤ 8, -16 ≤ k ≤ 16, -16 ≤ 1 ≤ 16) by using the ω/2θ scan technique to θmax = 45°. The structure was solved by direct methods and refined by least-square methods. Final agreement factors R = 0.053, Rw = 0.077. Atomic scattering factors were taken from International Tables for X-ray Crystallography, Vol. IV, 1974. All calculations and drawings were performed using a Micro VAX II computer with the SDP system.