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N-[4-(4-Nitro-phen-oxy)phen-yl]propionamide.

ABSTRACT: The title compound, C(15)H(14)N(2)O(4), is an important inter-mediate for the synthesis of thermotropic liquid crystals. The dihedral angle between the two aromatic rings is 84.29?(4)°. An N-H?O hydrogen bond connects the mol-ecules into chains running along the b axis. In addition, the crystal packing is stabilized by weak C-H?O hydrogen bonds.

SUBMITTER: Nigar A

PROVIDER: S-EPMC2959666 | biostudies-literature | 2008 Oct

REPOSITORIES: biostudies-literature

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N-[4-(4-Nitro-phen-oxy)phen-yl]propionamide.

Nigar Asifa A Akhter Zareen Z Bolte Michael M Siddiqi Humaira M HM Hussain Rizwan R

Acta crystallographica. Section E, Structure reports online 20081025 Pt 11

The title compound, C(15)H(14)N(2)O(4), is an important inter-mediate for the synthesis of thermotropic liquid crystals. The dihedral angle between the two aromatic rings is 84.29 (4)°. An N-H⋯O hydrogen bond connects the mol-ecules into chains running along the b axis. In addition, the crystal packing is stabilized by weak C-H⋯O hydrogen bonds. ...[more]

PMID: 21581044

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N-[4-(4-Nitro-phen-oxy)phen-yl]acetamide.

Project description:The asymmetric unit of the title compound, C(14)H(12)N(2)O(4), contains two mol-ecules that differ principally in the orientation of the acetamide substituent to the adjacent benzene ring with dihedral angles of 44.77 (7) and 19.06 (7)°. The dihedral angles between the benzene rings are 64.46 (4) and 80.84 (4)°. In the crystal, classical N-H⋯O hydrogen bonds form C(4) chains along [100]. These chains are inter-linked by C-H⋯O contacts forming R(2) (2)(10) rings. In the crystal, π-π inter-actions are observed with a distance of 3.5976 (18) Å between the centroids of the nitro-substituted benzene rings of one type of mol-ecule.

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Project description:In the title mol-ecule, C(22)H(18)N(2)O(5), the nitro-substituted benzene ring makes dihedral angles of 71.56?(1)° with the benzoyl ring and 16.28?(1)° with the methyl-substituted benzene ring. The crystal structure features C-H?O inter-actions, which generate chains.

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3-(2,4-Dichloro-phen-oxy)-1-(4-meth-oxy-phen-yl)-4-(3-nitro-phen-yl)azetidin-2-one.

Project description:In the title compound, C(22)H(16)Cl(2)N(2)O(5), the nearly planar four-membered ?-lactam ring [maximum deviations of 0.011?(2) for the N atom] makes dihedral angles of 68.34?(13), 83.04?(13) and 3.37?(13)° with the dichloro-, nitro- and meth-oxy-phenyl rings, respectively. The crystal structure is stabilized by C-H?O hydrogen-bond inter-actions. In addition, a ?-? stacking inter-action [centroid-centroid distance = 3.6622?(12)?Å] is observed between the ?-lactam and nitro-phenyl rings.

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3-(4-Chloro-phen-oxy)-1-(4-meth-oxy-phen-yl)-4-(4-nitro-phen-yl)azetidin-2-one.

Project description:In the title compound, C(22)H(17)ClN(2)O(5), the nearly planar four-membered β-lactam ring [maximum deviation of 0.016 (1) for the N atom] makes dihedral angles of 53.07 (9), 73.19 (9) and 6.61 (9)° with the chloro-, nitro- and meth-oxy-benzene rings, respectively. The crystal structure is stabilized by C-H⋯O hydrogen bonds, a weak C-H⋯π inter-action and a π-π stacking inter-action [centroid-centroid distance = 3.6513 (8) Å] between the meth-oxy-benzene rings of inversion-related mol-ecules.

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Project description:In the title compound, C(15)H(15)N(5)O(4), a nitro-formazan derivative, the formazan unit is essentially planar with an r.m.s. deviation of 0.0204?(6)?Å and adopts a closed syn,s-cis configuration with an intra-molecular N-H?N hydrogen bond. The formazan plane makes dihedral angles of 4.32?(5) and 24.35?(5)° with the benzene rings. The dihedral angle between the formazan plane and the nitro group is 12.58?(8)°. In the crystal, C-H?O inter-actions connect the mol-ecules into an inversion dimer.

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N-[4-(4-Nitro-phen-oxy)phen-yl]penta-n-amide.

Project description:The asymmetric unit of the title compound, C(17)H(18)N(2)O(4), contains two independent mol-ecules (A and B) differing principally in the conformations of the alkyl chains, anti for molecule A and gauche for molecule B. The dihedral angles between the aromatic rings are 82.51 (6) and 82.25 (6)° in the two molecules. In the crystal, amide-amide inter-actions (as N-H⋯O=C) results in distinct chains of A and B mol-ecules running parallel to the a-axis direction. C-H⋯O inter-actions also occur.

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Crystal structure of 1-(4-meth-oxy-phen-yl)-4-(4-nitro-phen-yl)-3-phen-oxy-azetidin-2-one.

Project description:In the title compound, C22H18N2O5, the central β-lactam ring (r.m.s. deviation = 0.002 Å) makes dihedral angles of 64.21 (14), 82.35 (12) and 20.66 (13)° with the phenyl ring and the nitro- and meth-oxy-benzene rings, respectively. The mol-ecular structure is stabilized by an intra-molecular C-H⋯O hydrogen bond. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds, forming slabs lying parallel to (111). The slabs are linked via C-H⋯π inter-actions, forming a three-dimensional network.

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3-(2-Eth-oxy-phen-yl)-1-(3-nitro-phen-yl)triaz-1-ene.

Project description:The title compound, C(14)H(14)N(4)O(3), exhibits a trans geometry about the N=N double bond in the triazene unit. The mol-ecule is approximately planar (r.m.s. deviation = 0.044 Å for all non-H atoms). An intra-molecular N-H⋯O hydrogen bond occurs. In the crystal, C-H⋯N hydrogen bonds lead to the formation of dimers which are, in turn, connected to each other by C-H⋯O hydrogen bonds, forming infinite chains of R(2) (2)(8) graph-set motif.

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