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2-Bromo-2-methyl-N-(4-nitro-phen-yl)propanamide.

ABSTRACT: The title compound, C(10)H(11)BrN(2)O(3), exhibits a small twist between the amide residue and benzene ring [the C-N-C-C torsion angle = 12.7 (4)°]. The crystal structure is stabilized by weak N-H⋯O, C-H⋯Br and C-H⋯O inter-actions. These lead to supra-molecular layers in the bc plane.

SUBMITTER: Moreno-Fuquen R

PROVIDER: S-EPMC3051943 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2-Bromo-N-(4-chloro-phen-yl)-2-methyl-propanamide.

Project description:In the title mol-ecule, C(10)H(11)BrClNO, there is a twist between the mean plane of the amide group and the benzene ring [C(=O)-N-C-C torsion angle = -27.1?(3)°]. In the crystal, inter-molecular N-H?O and weak C-H?O hydrogen bonds link the mol-ecules into chains along [010].

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2-Bromo-N-(2-hy-droxy-5-methyl-phen-yl)-2-methyl-propanamide.

Project description:In the title mol-ecule, C(11)H(14)BrNO(2), there is twist between the mean plane of the amide group and the benzene ring [the C-N-C-C torsion angle is -172.1 (2)°]. The amide H atom forms an intra-molecular hydrogen bond with the Br atom. In the crystal, inter-molecular O-H⋯O and weak C-H⋯O hydrogen bonds link mol-ecules into a chain along [100].

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N-(5-Chloro-2-nitro-phen-yl)-2,2-di-methyl-propanamide.

Project description:In the crystal structure of the title compound, C(11)H(13)ClN(2)O(3), mol-ecules are linked through C-H⋯O hydrogen bonds.

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N-{2-[N-(4-Methyl-phen-yl)oxamo-yl]phen-yl}propanamide.

Project description:The title compound, C(18)H(18)N(2)O(3), is the product of the heterocyclic ring cleavage at position 2 of 1-propionylisatin. Two centrosymmetric cyclic motifs, viz. R(2) (2)(14) and R(2) (2)(18), are formed by N-H?O hydrogen bonds with the propanamide and amino-phenyl units, respectively, as the N-H donors. These motifs combine into two C(2) (2)(8) chain motifs parallel to the b axis. The chain structure is stabilized by C-H?? inter-actions between the benzene rings, where C-H is from the phenyl ring of the cleaved part of 1-pro-pionylisatin.

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N-Ethyl-2,2-dimethyl-N-(3-methyl-phen-yl)propanamide.

Project description:In the title compound, C14H21NO, the conformation across the N-C(O) bond is syn-periplanar, the C-N-C-C torsion being -5.9 (5)°. The atoms of the ethyl group attached to the N atom are disordered over two sets of sites with occupancy ratios of 0.65 (2):0.35 (2) (CH2) and 0.689 (14):0.311 (14) (CH3)are linked by very weak C-H⋯O inter-actions forming C(8) chains along [001]. C-H⋯π inter-actions link the mol-ecules along the c-axis direction.

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2-Bromo-1-(3-nitro-phen-yl)ethanone.

Project description:In the title compound, C(8)H(6)BrNO(3), there are two mol-ecules, A and B, in the asymmetric unit. The nitro and ethanone groups lie close to the plane of the benzene ring and the bromine atom is twisted slightly: the dihedral angles between the mean planes of the nitro and ethanone groups and the benzene ring are 4.6?(4) (A) and 2.8?(3) (B), and 0.8?(8) (A) and 5.5?(8)° (B), respectively. An extensive array of weak C-H?O hydrogen bonds, ?-? ring stacking [centroid-centroid distances = 3.710?(5) and 3.677?(5)?Å] and short non-hydrogen Br?O and O?Br inter-molecular inter-actions [3.16?(6)and 3.06?(8)?Å] contribute to the crystal stability, forming a supermolecular three-dimensional network structure along 110. These inter-actions give rise to a variety of cyclic graph-set motifs and form inter-connected sheets in the three-dimensional structure.

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4-Bromo-N-(2-nitro-phen-yl)benzamide.

Project description:The title nitro-phenyl benzamide, C13H9BrN2O3, with two mol-ecules in the asymmetric unit, has dihedral angles of 16.78 (15) and 18.87 (14)° between the benzene rings. An intra-molecular N-H⋯O hydrogen bond is observed in each mol-ecule. In the crystal, the molecules are linked by weak C-H⋯O inter-actions; halogen-halogen inter-actions are also observed [Br⋯Br = 3.4976 (7) Å]. These inter-actions form R (2) 2(10), R (2) 2(15) and R (6) 6(32) edge-fused rings along [010].

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N-(4-Bromo-phen-yl)-4-nitro-benzamide.

Project description:In the title compound, C(13)H(9)BrN(2)O(3), the dihedral angle between the mean planes of the two benzene rings is 3.6 (7)°. The amide group is twisted by 28.1 (6) and 31.8 (3)° from the mean planes of the 4-bromo-phenyl and 4-nitro-benzene rings, respectively. The crystal packing features weak inter-molecular N-H⋯O and C-H⋯O hydrogen bonds resulting in a three-dimensional network.

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2-Bromo-2-methyl-N-(4-methyl-2-oxo-2H-chromen-7-yl)propanamide.

Project description:In the title compound C(14)H(14)BrNO(3), the coumarin ring system is almost planar (r.m.s. deviation = 0.008?Å) and an intra-molecular C-H?O inter-action generates an S(6) ring. In the crystal, mol-ecules are linked by N-H?O hydrogen bonds, with the C=O unit of the coumarin ring system acting as the acceptor group, generating [010] C(8) chains. The chain connectivity is reinforced by two C-H?O inter-actions.

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3-Bromo-methyl-4-meth-oxy-2-(2-nitro-phen-yl)-9-phenyl-sulfonyl-9H-carbazole.

Project description:In the title compound, C26H19BrN2O5S, the carbazole tricycle is essentially planar, with the largest deviation being 0.126 (3) Å for the C atom connected to the nitro-phenyl group. The carbazole moiety is almost orthogonal to the benzene rings of the adjacent phenyl-sulfonyl and nitro-phenyl groups, making dihedral angles of 85.43 (15) and 88.62 (12)°, respectively. The mol-ecular conformation is stabilized by two C-H⋯O hydrogen bonds involving the sulfone group, which form similar six-membered rings. In the crystal, mol-ecules symmetrically related by a glide plane are linked in C(6) chains parallel to [001] by C-H⋯O hydrogen bonds formed with the participation of the nitro group. The chains are reinforced by additional C-H⋯π inter-actions.

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