Tetrahedron Letters.
Elsevier Ltd.
Vol. 46.
2005.
P. 1975-1979
The crystal structure of 2,4,7-trinitro-9-fluorenone C13H 5N3O7 is determined by X-ray diffraction analysis. The crystals are monoclinic, a = 4.024(1) Å, b = 16.763(3) Å, c = 18.250(4) Å, β = 96.32(3)°, V = 1223.6(5) Å3, Z = 4, space group P21/c, and R = 0.0640 for 605 reflections with I > 2σ(1). The crystal is built of planar isolated molecules. The compound is characterized using IR and electronic absorption spectroscopy. © 2005 Pleiades Publishing, Inc.