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
作者:G. Piacenza、C. Beguet、E. Wimmer、R. Gallo、M. Giorgi
DOI:10.1107/s0108270197006495
日期:1997.10.15
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, each with the cyclic urea moieties and bridgehead atoms forming two mean planes having a dihedral angle of approximately 110 degrees. The CO of each acetyl group is anti to the CO of the cyclic urea to which it is attached.