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Bis[2-(benzyl-idene-amino)-phen-yl] disulfide.

ABSTRACT: In the title mol-ecule, C(26)H(20)N(2)S(2), the two benzene rings connected by a disulfide chain form a dihedral angle of 84.9 (1)°, and the two benzene rings in the two benzyl-idene-amino-phenyl fragments form dihedral angles of 34.4 (1) and 32.8 (1)°. The crystal structure exhibits weak inter-molecular C-H⋯S hydrogen bonds, which link the mol-ecules into chains along [101].

SUBMITTER: Wang Y

PROVIDER: S-EPMC3239009 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Bis[4-(2-benzyl-idenepropyl-idene-amino)phen-yl] ether.

Project description:The title compound, C(32)H(28)N(2)O, is a flexible Schiff base displaying a trans configuration across the C=N double bond. It was prepared in high yield by condensation of ?-methyl-cinnamaldehyde and bis-(4-amino-phen-yl) ether in methanol at room temperature. The sample, with pseudo-ortho-rhom-bic cell parameters, exhibited merohedral twinning by rotation 180° around a*, with a refined twin domain fraction of 0.722?(1). The elongated shape of the elementary cell corresponds to the shape and direction of the mol-ecules. The dihedral angle between the O-linked aromatic rings is 57.86?(8)°.

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Project description:In the crystal structure of the title compound, C22H13Br2N3, the two bromo-phenyl rings are rotated out of the plane of the central benzyl-idene ring by 68.7?(1) and 69.3?(1)°. Both cyano substituents are located nearly in the plane of the benzylidene ring, with the mean plane of the methylmalononitrile group being inclined to this ring by 5.8?(1)°. In the crystal, the mol-ecules are linked by weak C-H?N hydrogen bonds into layers parallel to the bc plane.

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1,2-Bis{2-[(4-meth-oxy-benzyl-idene)amino]-phen-yl}disulfane.

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Project description:The title compound, C(12)H(10)Cl(2)N(2)S(2), features an S-S bond [2.0671?(16)?Å] that bridges two 4-amino-2-chloro-phenyl rings with a C-S-S-C torsion angle of -84.2?(2)°. The two benzene rings are twisted with respect to each other at a dihedral angle of 39.9?(2)°. Inter-molecular N-H?S hydrogen bonding is present in the crystal structure.

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{5-Chloro-2-[(4-chloro-benzyl-idene)-amino]-phen-yl}(phen-yl)methanone.

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Project description:The title Schiff base compound, C(20)H(14)ClNO(2), adopts an E configuration about the azomethine bond. The phenol and chloro-benzene rings form dihedral angles of 84.71?(9) and 80.70?(8)°, respectively, with the phenyl ring and are twisted by 15.32?(8)° with respect to one another. The mol-ecular conformation is stabilized by an intra-molecular O-H?N hydrogen bond, which forms an S(6) ring motif. In the crystal, mol-ecules are linked by C-H?O hydrogen bonds, forming columns parallel to the a axis.

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Project description:The mol-ecule of the title compound, C28H22N4O9, exhibits crystallographically imposed twofold rotational symmetry, with a dihedral angle of 66.0 (2)° between the planes of the two central benzene rings bounded to the central oxygen atom. The dihedral angle between the planes of the central benzene ring and the terminal phenol ring is 4.9 (2)°. Each half of the mol-ecule exhibits an imine E configuration. An intra-molecular O-H⋯N hydrogen bond is present. In the crystal, the mol-ecules are linked into layers parallel to the ab plane via C-H⋯O hydrogen bonds. The crystal studied was refined as a two-component pseudomerohedral twin.

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Project description:The title compound, C(26)H(24)N(2)O(3), was synthesized by reduction of the corresponding Schiff base. The mol-ecule does not possess crystallographic or non-crystallographic symmetry. The dihedral angle between the oxygen-bridged benzene rings is 67.98 (8)°. Both hydroxyl groups are involved in O-H⋯O intra-molecular hydrogen bonding. The mol-ecules are linked into a two-dimensional network parallel to the (010) plane by N-H⋯O hydrogen bonds.

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