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N,N'-Diallyl-2,2',5,5'-tetra-chloro-N,N'-[1,3-phenyl-enebis(methyl-ene)]dibenzene-sulfonamide.

ABSTRACT: In the title compound, C(26)H(24)Cl(4)N(2)O(4)S(2), the dihedral angles between the central benzene ring and the pendant rings are 70.07 (12) and 59.07 (12)°. The equivalent angle between the pendant rings is 79.24 (12)°. Both sulfonamide groups lie to the same side of the central ring but the pendant chains have very different conformations, as indicated by their C-S-N-C torsion angles [104.66 (17) and -76.35 (19)°] and S-N-C-C torsion angles [129.61 (17) and 147.10 (17)°]. Both N atoms are close to planar (bond angle sums = 359.0 and 354.8°). In the crystal, inversion dimers are formed via a pair of weak C-H⋯O inter-actions which generate R(2) (2)(22) loops.

SUBMITTER: Sheikh TA

PROVIDER: S-EPMC3238937 | biostudies-literature |

REPOSITORIES: biostudies-literature

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2,2',5,5'-Tetra-chloro-N,N'-diethyl-N,N'-[benzene-1,3-diylbis(methyl-ene)]dibenzene-sulfonamide.

Project description:In the title compound, C(24)H(24)Cl(4)N(2)O(4)S(2), the dihedral angles between the central benzene ring and the pendant rings are 58.09?(10) and 62.59?(10)°. The dihedral angle between the pendant rings is 81.64?(9)°. Both sulfonamide groups lie to the same side of the central ring but the C-S-N-C torsion angles [73.09?(16) and -117.35?(14)] and S-N-C-C torsion angles [-143.80?(14) and -111.45?(16)°] differ significantly for the two pendant chains. The N atoms are close to planar (bond angle sums = 356.4 and 359.5°). In the crystal, weak C-H?O and C-H?Cl inter-actions link the mol-ecules.

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2,2',5,5'-Tetra-chloro-benzidine.

Project description:In the crystal structure of the title compound, C(12)H(8)Cl(4)N(2), mol-ecules lie on crystallographic twofold axes at the centre of the C-C bonds linking the benzene rings, such that the asymmetric unit consists of a half-mol-ecule. The individual mol-ecules participate in inter-molecular N-H⋯N, N-H⋯Cl, C-H⋯Cl and Cl⋯Cl [3.4503 (3) Å] inter-actions.

| S-EPMC3008068 | biostudies-literature

Crystal structure of the di-Mannich base 4,4'-di-chloro-3,3',5,5'-tetra-methyl-2,2'-[imidazolidine-1,3-diylbis(methyl-ene)]diphenol.

Project description:The title compound, C21H26Cl2N2O2, was prepared in a solvent-free microwave-assisted synthesis, and crystallizes in the ortho-rhom-bic space group Pna21. The imidazolidine ring adopts an envelope conformation and its mean plane is almost perpendicular to the two pendant aromatic rings [dihedral angles = 84.61 (9) and 86.54 (9)°]. The mol-ecular structure shows the presence of two intra-molecular O-H⋯N hydrogen bonds between the phenolic hy-droxy groups and imidazolidine N atoms. The two 3-chloro-6-hy-droxy-2,4-di-methyl-benzyl groups are located in a cis orientation with respect to the imidazolidine fragment. As a result, the lone pairs of electrons on the N atoms are presumed to be disposed in a syn conformation. This is therefore the first example of an exception to the 'rabbit-ears' effect in such 2,2'-[imidazolidine-1,3-diylbis(methyl-ene)]diphenol derivatives.

| S-EPMC4350744 | biostudies-literature

N,N'-Diethyl-N,N'-[1,3-phenylene-bis(methyl-ene)]dibenzene-sulfonamide.

Project description:In the title compound, C(24)H(28)N(2)O(4)S(2), the dihedral angles between the central benzene ring and the pendant rings are 77.44?(11) and 79.23?(10)°, and the dihedral angle between the pendant rings is 23.31?(12)°. Both sulfonamide groups project to the same side of the central benzene ring and the mol-ecule has approximate non-crystallographic mirror symmetry. One of the ethyl side chains is disordered over two sets of sites in a 0.526?(14):0.474?(14) ratio. In the crystal, inversion dimers linked by pairs of weak C-H?O inter-actions occur, generating R(2) (2)(28) loops.

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N,N'-[1,3-Phenylenebis(methyl-ene)]dibenzene-sulfonamide.

Project description:The complete mol-ecule of the title compound, C(20)H(20)N(2)O(4)S(2), is generated by crystallographic twofold symmetry, with two C atoms lying on the rotation axis. The dihedral angle between the central benzene ring and the pendant ring is 68.42?(6)° and the dihedral angle between the pendant rings is 45.11?(5)°. The torsion angles for the C-S-N-C and S-N-C-C fragments are -73.22?(15) and -150.45?(13)°, respectively. In the crystal, mol-ecules are linked by N-H?O hydrogen bonds, generating corrugated (001) sheets. Aromatic ?-? stacking [centroid-centroid separation = 3.8925?(12) and 3.9777?(12)?Å] and weak C-H?O inter-actions also occur.

| S-EPMC3247431 | biostudies-other

2,2'-Dichloro-N,N'-[1,3-phenyl-enebis(methyl-ene)]diacetamide.

Project description:The complete mol-ecule of the title compound, C(12)H(14)Cl(2)N(2)O(2), is generated by a crystallographic twofold axis with two C atoms of the central benzene ring lying on the axis. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into chains parallel to the c axis.

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2,2',4,4',6,6'-Hexamethyl-biphenyl-3,3',5,5'-tetra-yltetra-methyl-ene tetra-acetate.

Project description:The title compound, C(30)H(38)O(8), possess C(i) symmetry, with the inversion center situated at the center of the bridging C-C bond. In the crystal structure, mol-ecules are held together by C-H⋯O inter-actions.

| S-EPMC2969695 | biostudies-literature

2,2',4,4',6,6'-Hexamethyl-N-(3-phthalimidoprop-yl)-N,N'-(propane-1,3-di-yl)dibenzene-sulfonamide.

Project description:In the title compound, C(32)H(38)N(3)O(6)S(2), an inter-mediate in the synthesis of polyamine drugs, the dihedral angle between the phenyl rings of the two 2,4,6-trimethyl-benzene-sulfonyl groups is 27.1 (3)°. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds, thereby forming an infinite one-dimensional chain propagating along [010].

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4,4',5,5'-Tetra-methyl-2,2'-[1,1'-(propane-1,3-diyldinitrilo)diethyl-idyne]diphenol.

Project description:The title Schiff base compound, C(23)H(30)N(2)O(2), has crystallographic twofold rotation symmetry. An intra-molecular O-H?N hydrogen bond forms a six-membered ring, producing an S(6) ring motif. The imino group is coplanar with the benzene ring. The two benzene rings are almost perpendicular to each other, making a dihedral angle of 87.38?(4)°. In the crystal structure, neighbouring mol-ecules are linked along the c axis by weak inter-molecular C-H?O hydrogen bonds and are further packed into columns along the b axis, forming sheets which are parallel to the bc plane.

| S-EPMC2960569 | biostudies-literature

4,4'-Dichloro-3,3',5,5'-tetra-methyl-2,2'-[(3aR,7aR/3aS,7aS)-2,3,3a,4,5,6,7,7a-octa-hydro-1H-1,3-benzimidazole-1,3-di-yl)bis-(methyl-ene)]diphenol.

Project description:In the title compound, C(25)H(32)Cl(2)N(2)O(2), there are two intra-molecular O-H? N hydrogen-bonding inter-actions between the hy-droxy groups on the aromatic rings and the two N atoms of the heterocyclic group. The cyclo-hexane ring adopts a chair conformation and the imidazolidine unit to which it is fused has a twisted envelope conformation. The asymmetric unit comprises one half-mol-ecule which is completed by a twofold rotation axis. A C-H?O inter-action is observed in the crystal structure.

| S-EPMC3213571 | biostudies-literature

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