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(E)-1-Bromo-4-(2-nitro-prop-1-en-yl)benzene.

ABSTRACT: The title compound, C(9)H(8)BrNO(2), which was synthesized by the condensation of 4-bromo-benzaldehyde with nitro-ethane, possesses a trans configuration. The dihedral angle between the benzene ring and the mean plane of the double bond is 7.31 (3)°. The crystal structure is stabilized by short inter-molecular Br⋯O contacts [3.168 (4) Å].

SUBMITTER: Li B

PROVIDER: S-EPMC2971981 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1-Nitro-4-(2-nitro-prop-1-en-yl)benzene.

Project description:The asymmetric unit of the title compound, C(9)H(8)N(2)O(4), contains two crystallographically independent mol-ecules, both of which adopt an E configuration about the C=C bond. In the crystal, the mol-ecules stack into columns along the c axis through π-π inter-actions, with centroid-centroid distances of 3.695 (3) and 3.804 (3) Å. The columns are further connected into a three-dimensional network by C-H⋯O hydrogen bonds.

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(E)-1-Nitro-2-(2-nitro-prop-1-en-yl)benzene.

Project description:The title compound, C(9)H(8)N(2)O(4), adopts an E conformation about the C=C bond. The CH(phen-yl)-C(phen-yl)-CH-C(-NO(2)) torsion angle is -57.7?(3)°. The crystal structure features weak inter-molecular C-H?O inter-actions.

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1-Methyl-4-[(1E)-2-nitro-prop-1-en-1-yl]benzene.

Project description:The title compound, C(10)H(11)NO(2), adopts an E conformation about the C=C bond. The C=C-C=C torsion angle is 32.5?(3)°. The crystal structure features weak inter-molecular C-H?O inter-actions.

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N-{1-[(3-Bromo-prop-yl)amino-carbon-yl]eth-yl}-2-(2-nitro-benzene-sulfonamido)propionamide.

Project description:In the title compound, C(15)H(21)BrN(4)O(6)S, all three NH groups are involved in inter-molecular N-H?O inter-actions which, together with two inter-molecular C-H?O contacts, lead to a continuous anti-parallel ?-sheet structure. There are no ?-? inter-actions between mol-ecules, and two C-H?? inter-actions primarily govern the linkage between sheets.

| S-EPMC2970335 | biostudies-literature

1,3-Bis(bromo-meth-yl)-2-nitro-benzene.

Project description:In the title compound, C(8)H(7)Br(2)NO(2), an inter-mediate for the synthesis of macrocycles, the NO(2) group makes a dihedral angle of 65.07?(19)° with the arene ring, and the bromo-methyl substituents adopt a trans conformation about the ring such that the mol-ecule closely approximates C2 symmetry.

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(E)-2-(2-Nitro-prop-1-en-yl)furan.

Project description:Crystals of the title compound, C(7)H(7)NO(3), under Mo K? radiation sublime in less than 1h at room temperature. However, it was possible to collect data at 100K. It crystallized as the E isomer only. A double-bond conjugation in the furan ring is extended to the nitro-alkenyl group. Mol-ecular associations were realized in the crystal through N?? [3.545?(2)?Å] inter-actions involving the furan ring and C-H?O hydrogen bonds.

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(Z)-3-(9-Anthr-yl)-1-(4-bromo-phen-yl)-2-(4-nitro-1H-imidazol-1-yl)prop-2-en-1-one.

Project description:In the title mol-ecule, C(26)H(16)BrN(3)O(3), the anthracene and benzene mean planes make dihedral angles of 63.79?(2) and 14.67?(2)°, respectively, with the plane of the imidazole ring. In the crystal structure, weak inter-molecular C-H?O hydrogen bonds link mol-ecules to form centrosymmetric dimers. Weak ?-? stacking inter-actions, with centroid-centroid distances of 3.779?(2) and 3.826?(2)?Å, supply additional stabilization. The crystal packing also exhibits short inter-molecular contacts between the nitro groups and Br atoms [Br?O = 3.114?(2)?Å].

| S-EPMC2969633 | biostudies-literature

1-Bromo-2-[(E)-2-nitro-ethen-yl]benzene.

Project description:In the title compound, C(8)H(6)BrNO(2), the dihedral angle between the planes of the benzene ring and the nitro group is 22.99 (12)°. In the crystal, inversion dimers associated by pairs of short Br⋯O contacts [3.2319 (17) Å] occur.

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N-Phenyl-N-(prop-2-en-1-yl)benzene-sulfonamide.

Project description:In the mol-ecule of the title compound, C(15)H(15)NO(2)S, the dihedral angle between the two phenyl rings is 41.8?(3)°. The S atom has a distorted tetra-hedral environment. In the crystal structure, C-H?O hydrogen bonds link the molecules into a ribbon-like structure along [010].

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(2E)-1-(2-Bromo-phen-yl)-3-(4-bromo-phen-yl)prop-2-en-1-one.

Project description:The title compound, C(15)H(10)Br(2)O, is a chalcone with 2-bromo-phenyl and 4-bromo-phenyl rings bonded to opposite sides of a propenone group. The dihedral angle between mean planes of the benzene rings is 71.3 (1)°. The angle between the mean plane of the prop-2-ene-1-one group and the mean planes of the 2-bromo-phenyl and 4-bromo-phenyl rings are 64.2 (9) and 71.3 (1)°, respectively. A weak inter-molecular C-H⋯O inter-action and two weak C-Br⋯π inter-actions are observed, which contribute to the stability of the crystal packing.

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