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1-Nitro-4-(4-nitro-phen-oxy)benzene: a second monoclinic polymorph.

ABSTRACT: 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, mol-ecules are linked by C-H?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 mol-ecule 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].

SUBMITTER: Naz M

PROVIDER: S-EPMC3885027 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature

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1-Nitro-4-(4-nitro-phen-oxy)benzene: a second monoclinic polymorph.

Naz Mehwish M Akhter Zareen Z McKee Vickie V McKee Vickie V Nadeem Arif A

Acta crystallographica. Section E, Structure reports online 20131106 Pt 12

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, mol-ecules are linked by C-H⋯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 mol-ecule possesses twofold rotation symmetry ...[more]

PMID: 24454202

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