作者:M. Abdul-Ghani、R. G. Pritchard、A. E. Tipping
DOI:10.1107/s0108270194011881
日期:1995.4.15
The title structure, C13H8F6N2O, is the hydrolysis product of the rearranged 1,3-dipolar cycloadduct of 2,5-dichloro-1,1,1,6,6,6-hexafluoro-3,4-diazahexa-2,4-diene and indene, and comprises approximately planar moieties meeting at a dihedral angle of 119.7(1)degrees along the shared C-C bond between the five-membered rings. One plane contains the carbonyl substituent, which lies trans to the N-N bond [O=C-N-N 179.2(3)degrees] and completes a delocalization pathway extending from the ring C=N bond [C-N-N=C -176.3 (3)degrees]. However, as the latter bond is only 1.248(4) Angstrom, long, any delocalization must be limited to the O=C-N-N region.