Crystal structure of m-nitrobenzoic anhydride |
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Authors: | Marek L G?ówka Iwona Iwanicka Izabela Król |
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Institution: | (1) Institute of General Chemistry, Technical University of Lód , 90-924 ód , Poland;(2) Neurological Clinic, Medical Academy, 90-153 ód , Poland |
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Abstract: | The title compound (C14H8N2O7,M
r
=306.2) crystallizes in the orthorhombic space group Pbca witha=6.962(1).b=24.688(1), andc=15.890(1)Å,V=2731.0 Å3,D
x
=1.489 g·cm–3 forZ=8, =0.98 mm–1,F(000)=1296,T=293 K. FinalR=0.053 for 1873 observed reflections. The structure was solved by direct methods. Approximately planar molecules lie perpendicular to the 100] direction and show partial stacking. The structure is the first example of a symmetric anhydride which does not retain the symmetry in the crystal state. The two independent nitro groups twist out of the ring planes by 10.5 and 14.8°, respectively. |
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Keywords: | |
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