2, 4, 6, 8-Tetraazabicyclo [3.3. 1] nonane-3, 7-dione and 2, 4, 6, 8-Tetraacetyl-2, 4, 6, 8-tetraazabicyclo [3.3. 1] nonane-3, 7-dione

G Piacenza, C Beguet, E Wimmer, R Gallo…

文献索引：Piacenza; Beguet; Wimmer; Gallo; Giorgi Acta Crystallographica, Section C: Crystal Structure Communications, 1997 , vol. 53, # pt 10 p. 1459 - 1462

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被引用次数: 6

摘要

The title compounds, 2, 4, 6, 8-tetraazabicyclo [3.3. 1] nonane-3, 7-dione,(I)(C5H8N4O2), and 2, 4, 6, 8-tetraacetyl-2, 4, 6, 8-tetraazabicyclo [3.3. 1] nonane-3, 7-dione,(II)( C13H16N4O6), display similar conformations with the cyclic urea moieties and bridgehead atoms forming two mean planes having a dihedral angle of approximately 110°. The CO of each acetyl group is anti to the CO of the cyclic urea to which it is attached.