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2,2'-Diamino-N,N'-(o-phenyl-ene)di-benz-amide.

ABSTRACT: In the structure of the title compound, C(20)H(18)N(4)O(2), the N-H and C=O bonds are trans to each other and the amide O atoms are syn to the ortho amino N atom in the benzoyl rings. The amide groups form dihedral angles of 8.4 (2) and 13.8 (2)° with their respective benzoyl rings, and dihedral angles of 51.85 (16) and 51.19 (17)° with the phenyl-enediamine ring. In the crystal, a centrosymmetric dimer is formed by inter-molecular N-H⋯O hydrogen bonds, resulting in an R(2) (2)(14) descriptor on a unitary level of graph-set analysis, and three intramolecular N-H⋯O bonds also occur.

SUBMITTER: Booysen I

PROVIDER: S-EPMC2968993 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2,2'-Diazinodimethylidyne)di-o-phenyl-ene) dibenzoate.

Project description:The title compound, C(28)H(20)N(2)O(4), was synthesized by the reaction of 2-(hydrazonometh-yl)phenyl benzoate with iodine. The mol-ecule possesses a crystallographically imposed center of symmetry at the mid-point of the hydrazine N-N bond. The substituents at the ends of the C=N bonds adopt an E,E configuration. Inter-molecular C-H??(arene) hydrogen bonds and aromatic ?-? stacking inter-actions [centroid-centroid distance 3.900?(1)?Å] link the mol-ecules into (100) sheets. In addition, there is an inter-molecular C-H?O hydrogen-bond inter-action.

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Propane-2,2-diyl di-p-phenyl-ene dibenzoate.

Project description:The V-shaped propeller-like mol-ecule of the title compound, C(29)H(24)O(4), does not exhibit crystallographic twofold symmetry as the two benzene rings are twisted asymmetrically with respect to both the central propyl plane and the benzo-yloxy groups [4.6?(2), 43.6 (2)° and 45.07?(8), 69.50?(8)°]. In the crystal structure, centrosymmetrically related mol-ecules form a dimer through C-H?? inter-molecular inter-actions.

| S-EPMC2915318 | biostudies-literature

N,N'-Di-8-quinolyl-2,2'-(o-phenyl-ene-di-oxy)diacetamide.

Project description:In the title compound, C(28)H(22)N(4)O(4), the mol-ecule lies on a crystallographic twofold axis. The quinoline ring is essentially planar (give max or rms deviation 0.0186?Å), and the dihedral angle between the quinoline ring and the central benzene ring is 19.1?(4)°. Intra-molecular N-H?(N,O) and C-H?O hydrogen bonds contribute to the formation of the roughly planar configuration. The crystal packing is stabilized by inter-molecular C-H?O hydrogen bonds, and weak ?-? inter-actions between the pyridine rings and central benzene rings of the neighboring mol-ecules [centroid-centroid separation = 3.9009?(6)?Å].

| S-EPMC2971241 | biostudies-literature

2,2'-(1,4-Phenyl-ene)bis-(propane-2,2-di-yl) bis-(benzodi-thio-ate).

Project description:The title compound, C26H26S4, shows a dihedral angle of 76.64?(15)° between the central and peripheral benzene rings. An inversion center is located at the centroid of the thio-benzoyl ring. In the crystal, weak C-H?S inter-actions form C(5) chains along [001]. There are no classical hydrogen bonds.

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Project description:In the mol-ecule of the title compound, C(20)H(16)N(2)O(2), two intra-molecular N-H?O inter-actions occur. The mol-ecular chains are linked by N-H?? and C-H?? inter-actions into a three-dimensional network, which seems to be very effective in the stabilization of the crystal structure.

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2,2'-Dimethyl-2,2'-(m-phenyl-ene-dimethyl-ene)propane-dinitrile.

Project description:The title compound, C(16)H(14)N(4), features an aromatic ring with two 2,2'-dicyano-propyl residues in positions 1 and 3, which are located above and below the ring plane. The two residues differ in their conformation with respect to the aromatic ring: whereas one of the C(meth-yl)-C-C(methyl-ene)-C(aromatic) torsion angles is gauche [68.93?(12)°], the other one is fully staggered [177.63?(9)°]. The crystal structure is stabilized by C-H?N hydrogen-bonding inter-actions.

| S-EPMC2969357 | biostudies-literature

6,6'-Di-tert-butyl-2,2'-[1,2-phenyl-ene-bis(nitrilo-methyl-idyne)]diphenol.

Project description:The mol-ecule of the title Schiff base compound, C(28)H(32)N(2)O(2), has a twisted geometry, the dihedral angles between the central benzene ring and the other two benzene rings being 29.12?(14) and 26.01?(14)°. Four intra-molecular C-H?O hydrogen bonds and two intra-molecular O-H?N hydrogen bonds stabilize the mol-ecular structure. In the crystal packing, mol-ecules are stacked along the a axis and stabilized by ?-? inter-actions [centroid-centroid distance = 3.6724?(17)?Å]. The crystal studied was found to be a non-merohedral twin, the refined ratio of twin components being 0.374?(5):0.626?(5).

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2,2'-[(4-Methyl-2-phenyl-imidazolidine-1,3-di-yl)bis-(methyl-ene)]diphenol.

Project description:The methyl-substituted imidazolidine ring of the title compound, C24H26N2O2, adopts an envelope conformation with the N atom adjacent to the methyl-ene group as the flap. The meth-yl-ethyl-ene fragment in this ring is disordered over two positions with an occupancy ratio of 0.899?(4):0.101?(4). The hy-droxy-benzyl groups are inclined at 71.57?(15) and 69.97?(19)° to the mean plane of major disorder component of the heterocyclic ring with an inter-planar angle between the two hy-droxy-benzyl groups of 66.00?(5)°. The phenyl substit-uent approaches a nearly perpendicular orientation relative to the mean plane of the imidazolidine ring, making a dihedral angle of 75.60?(12)°. This conformation is stabilized by two intra-molecular O-H?N bonds, which generate S(6) ring motifs.

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5,5'-Di-4-pyridyl-2,2'-(p-phenyl-ene)di-1,3,4-oxadiazole.

Project description:In the crystal structure of the title compound, C(20)H(12)N(6)O(2), the mol-ecules are located on centres of inversion. The complete mol-ecule is almost planar, with a maximum deviation from the mean plane of 0.0657?(1)?Å for the O atom. In the crystal, mol-ecules are stacked into columns elongated in the a axis direction. The centroid-centroid distances between the aromatic rings of the mol-ecules within the columns are 3.6406?(1) and 3.6287?(2)?Å. Mol-ecules are additionally connected via weak inter-molecular C-H?N hydrogen bonding.

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5,5'-Di-4-pyridyl-2,2'-(5-tert-butyl-m-phenyl-ene)bis-(1,3,4-oxadiazole).

Project description:The title compound, C(24)H(20)N(6)O(2), is a novel 1,3,4-oxadiazole derivative which has potential as an electron-transporting material in organic electroluminescent (EL) devices. In the crystal, the mol-ecular framework is almost planar with an r.m.s. deviation of 0.091?(4)?Å and it exists in an E form. Intra-molecular C-H?O and C-H?N hydrogen bonds are observed between the benzene and 1,3,4-oxadiazole rings. The tert-butyl group is disordered over two sites, with occupancy factors of 0.78?(1) and 0.22?(1) for the major and minor orientations, respectively. In the crystal structure, mol-ecules aggregate via C-H?N inter-actions, forming mol-ecular tapes along the b axis, which aggregate to form a mol-ecular sheet via C-H?N inter-actions.

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