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(E)-2-[2-(2-Nitro-phen-yl)ethen-yl]-8-quinolyl acetate.

ABSTRACT: The title compound, C(19)H(14)N(2)O(4), crystallizes with two molecules with very similar conformations in the asymmetric unit; the angles between the two ring systems are 8.7 (1) and 4.2 (1)°. In the crystal, inter-molecular π-π inter-actions [centroid-centroid distance 3.973 (1) Å] lead to a three-dimensional network.

SUBMITTER: Zhang LY

PROVIDER: S-EPMC2970963 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature

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(E)-2-[2-(2-Nitro-phen-yl)ethen-yl]-8-quinolyl acetate.

Zhang Li-Yan LY Huo Yan-Ping YP

Acta crystallographica. Section E, Structure reports online 20091031 Pt 11

The title compound, C(19)H(14)N(2)O(4), crystallizes with two molecules with very similar conformations in the asymmetric unit; the angles between the two ring systems are 8.7 (1) and 4.2 (1)°. In the crystal, inter-molecular π-π inter-actions [centroid-centroid distance 3.973 (1) Å] lead to a three-dimensional network. ...[more]

PMID: 21578531

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Crystal structures and Hirshfeld surface analyses of the two isotypic compounds (<i>E</i>)-1-(4-bromo-phen-yl)-2-[2,2-di-chloro-1-(4-nitro-phen-yl)ethen-yl]diazene and (<i>E</i>)-1-(4-chloro-phen-yl)-2-[2,2-di-chloro-1-(4-nitro-phen-yl)ethen-yl]diazene.

Project description:In the two isotypic title compounds, C14H8BrCl2N3O2, (I), and C14H8Cl3N3O2, (II), the substitution of one of the phenyl rings is different [Br for (I) and Cl for (II)]. Aromatic rings form dihedral angles of 60.9 (2) and 64.1 (2)°, respectively. Mol-ecules are linked through weak X⋯Cl contacts [X = Br for (I) and Cl for (II)], C-H⋯Cl and C-Cl⋯π inter-actions into sheets parallel to the ab plane. Additional van der Waals inter-actions consolidate the three-dimensional packing. Hirshfeld surface analysis of the crystal structures indicates that the most important contributions for the crystal packing for (I) are from C⋯H/H⋯C (16.1%), O⋯H/H⋯O (13.1%), Cl⋯H/H⋯Cl (12.7%), H⋯H (11.4%), Br⋯H/H⋯Br (8.9%), N⋯H/H⋯N (6.9%) and Cl⋯C/C⋯Cl (6.6%) inter-actions, and for (II), from Cl⋯H / H⋯Cl (21.9%), C⋯H/H⋯C (15.3%), O⋯H/H⋯O (13.4%), H⋯H (11.5%), Cl⋯C/C⋯Cl (8.3%), N⋯H/H⋯N (7.0%) and Cl⋯Cl (5.9%) inter-actions. The crystal of (I) studied was refined as an inversion twin, the ratio of components being 0.9917 (12):0.0083 (12).

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