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In the title compound, C14H11Cl2NO, the dihedral angle between the benzene rings is 15.36 (8)°. A phenol–imine-type intramolecular O—H
N hydrogen bond generates an S(5) ring motif. In the crystal, a pair of weak C—HO hydrogen bonds form an R21(7) ring motif involving glide-plane-related molecules. The molecules linked via these interactions form chains along [101].
N hydrogen bond generates an S(5) ring motif. In the crystal, a pair of weak C—HO hydrogen bonds form an R21(7) ring motif involving glide-plane-related molecules. The molecules linked via these interactions form chains along [101].organic compounds
In the title compound, C12H8N2O5, the aromatic rings are inclined to one another by 56.14 (7)°. The nitro groups are inclined by to the benzene rings to which they are attached by 3.86 (17) and 9.65 (15)°. In the crystal, molecules are linked by C—HO hydrogen bonds, forming a three-dimensional structure. The title compound is a new monoclinic polymorph, crystallizing in space group P21/c. The first polymorph crystallized in space group C2/c and the molecule possesses twofold rotation symmetry. Two low-temperature structures of this polymorph (150 K and 100 K, respectively) have been reported [Meciarova et al. (2004). Private Communication (refcode IXOGAD). CCDC, Cambridge, England, and Dey & Desiraju (2005). Chem. Commun. pp. 2486–2488].
O hydrogen bonds, forming a three-dimensional structure. The title compound is a new monoclinic polymorph, crystallizing in space group P21/c. The first polymorph crystallized in space group C2/c and the molecule possesses twofold rotation symmetry. Two low-temperature structures of this polymorph (150 K and 100 K, respectively) have been reported [Meciarova et al. (2004). Private Communication (refcode IXOGAD). CCDC, Cambridge, England, and Dey & Desiraju (2005). Chem. Commun. pp. 2486–2488].
