N, N′-Dimethyl-1, 4-dithiine-1, 2: 4, 5-tetracarboximide and N, N′-dimethyl-1, 4-diselenine-1, 2: 4, 5-tetracarboximide

…, M Atfani, JY Bergeron, F Belanger-Gariepy…

文献索引：Brisse, Francois; Atfani, Mohamed; Bergeron, Jean-Yves; Belanger-Gariepy, Francine; Armand, Michel Acta Crystallographica Section C: Crystal Structure Communications, 2000 , vol. 56, # 2 p. 190 - 192

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被引用次数: 6

摘要

The title compounds of sulfur, C10H6N2O4S2,(I), and selenium, C10H6N2O4Se2,(II), are isomorphous. The crystallographically centrosymmetric molecules are planar. The bond distances and angles, except for those involving the S and Se atoms, are comparable. The molecules are disposed in layers parallel to the bc plane. The molecular axes differ by 75° for (I) and by 80° for (II) from one layer to the next.