The dithione can be prepared (as trans-dithioglyoxal) by low temperature photolysis of 1,3-dithiol-2-one.[6] Quantum chemical calculations reproduce the observed greater stability of 1,2-dithiete only if large basis-sets with polarization functions are used.[7]
Structure of the dithiete S2C2(CO2Me)2. Selected distances and angles: rC=C = 1.362, rC-S = 1.738, rS-S = 2.072 Å, <S-S-C = 78.3°, <S-C-S = 102°.[4]
Diehl, F.; Meyer, H.; Schweig, A.; Hess, B. A.; Fabian, J. (September 1989). "1,2-Dithiete is more stable than 1,2-dithioglyoxal as evidenced by a combined experimental and theoretical IR spectroscopic approach". J. Am. Chem. Soc. 111 (19): 7651–7653. doi:10.1021/ja00201a076.
Vijay, D; Priyakumar, UD; Sastry, GN (2004). "Basis set and method dependence of the relative energies of C2S2H2 isomers". Chemical Physics Letters. 383 (1–2): 192–197. Bibcode:2004CPL...383..192V. doi:10.1016/j.cplett.2003.11.021.
Jonas, V; Frenking, G (1991). "On the crucial importance of polarization functions for the calculation of molecules with third-row elements: the conformations of chlorocarbonyl isocyanate ClC(O)NCO and the equilibrium of 1,2-dithioglyoxal with its cyclic isomer 1,2-dithiete". Chemical Physics Letters. 177 (2): 175–183. Bibcode:1991CPL...177..175J. doi:10.1016/0009-2614(91)90064-G.
Gonzalez, L; Mo, O; Yanez, M (13 December 1996). "High-level ab initio calculations on the 1,2-dithioglyoxal/1,2-dithiete isomerism". Chemical Physics Letters. 263 (3): 407–413(7). Bibcode:1996CPL...263..407G. doi:10.1016/S0009-2614(96)01240-7.
^Donahue, JP; Holm, RH (1998). "3,4-Bis(1-adamantyl)-1,2-dithiete: the First Structurally Characterized Dithiete Unsupported by a Ring or Benzenoid Frame". Acta Crystallographica. C54 (8): 1175–1178. doi:10.1107/S0108270198002935. PMID9760719.
^ abT. Shimizu; H. Murakami; Y. Kobayashi; K. Iwata; N. Kamigata (1998). "Synthesis, Structure, and Ring Conversion of 1,2-Dithiete and Related Compounds". J. Org. Chem. 63 (23): 8192–8199. doi:10.1021/jo9806714.
^Reinhard Schulz; Armin Schweig; Klaus Hartke; Joachim Koester (1983). "Theory and application of photoelectron spectroscopy. 100. Variable-temperature photoelectron spectral study of 1,3-dithiol-2-one and 4,5-disubstituted 1,3-dithiol-2-ones. Thermal generation of 1,2-dithiete, 3,4-disubstituted 1,2-dithietes, and dialkyl tetrathiooxalates". Journal of the American Chemical Society. 105 (14): 4519–4528. doi:10.1021/ja00352a004.
^Mucha, M; Pagacza, M; Mielke, Z (6 June 2008). "Infrared detection of dithioglyoxal from photolysis of 1,3-dithiol-2-one in solid argon and nitrogen". Chemical Physics Letters. 458 (1–3): 39–43. Bibcode:2008CPL...458...39M. doi:10.1016/j.cplett.2008.04.088.
^Frolov, YV; Vashchenko, AV; Mal'kina, AG; Trofimov, BA (2009). "Ab initio quantum-chemical calculations of the energies and structures of 1,2-acetylenedithiol isomers". Journal of Structural Chemistry. 50 (2): 195–200. doi:10.1007/s10947-009-0029-8. S2CID93780466.