Tetrasulphur tetranitride and phenyl vinyl sulphoxide or sulphone react to give a novel planar delocalised 14π electron aromatic system, 1λ4δ2,3,5,7λ4δ2-tetrathia-2,4,6,8-tetraza-azulene (4) in which all the S4N4 atoms have been retained; the molecules form parallel overlapping stacks with a minimum interplanar atomic separation of 3.26 Å.
R. Jones, J. L. Morris, C. W. Rees and D. J. Williams, J. Chem. Soc., Chem. Commun., 1985, 1654 DOI: 10.1039/C39850001654
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