Abstract
The title compound, C18H8F6N2O4S, is a precursor for the production of low-band-gap conjugated polymers. In the crystal structure, the dihedral angles between the thiophene and benzene rings are 35.90 (8) and 61.94 (8)°, and that between the two benzene rings is 40.18 (8)°. The two nitro groups are twisted with respect to the thiophene ring, the dihedral angles being 53.66 (10) and 31.63 (10)°. Weak intermolecular C—H⋯O hydrogen bonding helps to stabilize the crystal structure.
Highlights
The title compound, C18H8F6N2O4S, is a precursor for the production of low-band-gap conjugated polymers
The dihedral angles between the thiophene and benzene rings are 35.90 (8) and 61.94 (8), and that between the two benzene rings is 40.18 (8)
The two nitro groups are twisted with respect to the thiophene ring, the dihedral angles being 53.66 (10) and 31.63 (10)
Summary
Absorption correction: multi-scan (SADABS; Bruker, 2001) Tmin = 0.895, Tmax = 0.973. V = 3512.6 (2) A 3 Z=8 Mo K radiation = 0.28 mmÀ1 T = 100 K 0.4 Â 0.36 Â 0.1 mm 22650 measured reflections 3098 independent reflections 1888 reflections with I > 2(I) Rint = 0.058. 281 parameters H-atom parameters constrained Ámax = 0.29 e A À3 Ámin = À0.28 e A À3. The dihedral angles between the thiophene and benzene rings are 35.90 (8) and 61.94 (8), and that between the two benzene rings is 40.18 (8). The two nitro groups are twisted with respect to the thiophene ring, the dihedral angles being 53.66 (10) and 31.63 (10). Weak intermolecular C—HÁ Á ÁO hydrogen bonding helps to stabilize the crystal structure
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