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5-{2-[(2-Hydroxy-5-methyl-phen-yl)(phenyl)methyl-eneamino]phenyl-imino-meth-yl}-pyrrole-2-carbaldehyde.

ABSTRACT: The title compound, C(26)H(21)N(3)O(2), is an unsymmetrical tetra-dentate Schiff base ligand. The hydr-oxy group forms an intra-molecular O-H⋯N hydrogen bond with an adjacent N atom. An inter-molecular N-H⋯O hydrogen bond creates centrosymmetric dimers in the crystal packing.

SUBMITTER: Liu G

PROVIDER: S-EPMC2962098 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Methyl (E)-2-({2-[(E)-(hy-droxy-imino)-meth-yl]phen-oxy}meth-yl)-3-phenyl-acrylate.

Project description:In the title compound, C(18)H(17)NO(4), the hy-droxy-ethanimine group is essentially coplanar with the ring to which it is attached [C-C-N-O torsion angle = 179.94?(14)°]. The mol-ecules are linked into cyclic centrosymmetric R(2) (2)(6) dimers via O-H?N hydrogen bonds and the crystal packing is further stabilized by C-H?O inter-actions.

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Methyl N-({[2-(2-meth-oxy-acetamido)-4-(phenyl-sulfan-yl)phen-yl]amino}[(meth-oxy-carbonyl)imino]methyl)carbamate.

Project description:In the title compound, C(20)H(22)N(4)O(6)S, the phenyl and benzene rings form a dihedral angle of 58.75?(5)°. Intra-molecular N-H?O and N-H?N hydrogen bonds generate two S(6) and one S(7) ring motif, respectively. In the crystal, mol-ecules are linked via N-H?O, N-H?N, C-H?S and C-H?O hydrogen bonds, forming two-dimensional networks parallel to the bc plane.

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4-[(Ethoxy-imino)(phen-yl)meth-yl]-5-methyl-2-phenyl-1H-pyrazol-3(2H)-one.

Project description:In the mol-ecule of the title compound, C(19)H(19)N(3)O(2), the central pyrazole ring makes dihedral angles of 9.89?(3) and 66.06?(5)° with the two phenyl rings, and the two phenyl rings form an angle of 74.05?(5)°. An intra-molecular C-H?O hydrogen bond forms a six-membered ring, producing an S(6) ring motif. In the crystal structure, inter-molecular N-H?O and C-H?O hydrogen bonds link each mol-ecule to two others, forming an infinite one-dimensional supra-molecular structure along the c axis.

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2-Methyl-6-[2-(trifluoro-meth-yl)phenyl-imino-meth-yl]phenol.

Project description:The title compound, C(15)H(12)F(3)NO, is a Schiff base which adopts the phenol-imine tautomeric form in the solid state. The dihedral angle between the aromatic rings is 38.79?(5)°. The mol-ecular structure is stabilized by an intra-molecular O-H?N hydrogen bond, which generates an S(6) ring. In addition, there is an intra-molecular short C-H?F contact.

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N-{4-[(E)-(4-Methyl-phen-yl)imino-meth-yl]phen-yl}acetamide.

Project description:There are two symmetry-independent mol-ecules in the asymmetric unit of the title compound, C(16)H(16)N(2)O, that differ in conformation. The dihedral angles between the benzene rings in the two mol-ecules are 44.35?(19) and 48.14?(17)°, but the rings twist in opposite directions. The acetamide groups make nearly equal dihedral angles of 25.4?(3) and 25.7?(3)° with the parent benzene rings. An S(6) ring motif is formed in each mol-ecule by intra-molecular C-H?O close contacts. In the crystal, strong N-H?O hydrogen bonds between acetamide groups generate a C(4) chain motif arranging the mol-ecules into two symmetry-independent polymeric structures extending along [010].

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2-[2-(Hydroxy-meth-yl)phen-yl]-1-phenyl-ethanol.

Project description:The title compound, C(15)H(16)O(2), has a dihedral angle of 19.10?(5)° between the mean planes of the two benzene rings. There is an intra-molecular O-H?O hydrogen bond and the C-C-C-C torsion angle across the bridge between the two rings is 173.13?(14)°. The mol-ecules form inter-molecular O-H?O hydrogen-bonded chains extending along the a axis. C-H?? contacts are also observed between mol-ecules within the chains.

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4-[(E)-(4-Methyl-phen-yl)imino-meth-yl]phenol.

Project description:In the title compound, C(14)H(13)NO, the two rings show significant deviation from coplanarity, with a dihedral angle between the two planes of 49.40 (5)°. The hy-droxy group is involved in an inter-molecular O-H⋯N hydrogen bond, forming an extended one-dimensional zigzag chain along (001).

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4-Chloro-2-((E)-{3-[1-(hydroxy-imino)eth-yl]phen-yl}imino-meth-yl)phenol.

Project description:The title compound, C(15)H(13)ClN(2)O(2), adopts an E conformation with respect to the azomethine C=N bond. The aniline and phenol rings are almost coplanar, making a dihedral angle of 3.33?(2)°. In the crystal, the mol-ecules lie about inversion centers, forming dimers that are connected by inter-molecular O-H?N hydrogen bonds, resulting in six-membered rings with graph-set motif R(2) (2)(6). In addition, there is a strong inter-molecular O-H?N hydrogen-bonding inter-action, resulting in an S(6) ring motif. Weak ?-? inter-actions between the benzene rings [centroid-centroid distance = 3.809?(1)?Å] further stabilize the crystal structure.

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2-Meth-oxy-imino-2-{2-[(2-methyl-phen-oxy)meth-yl]phen-yl}ethanol.

Project description:In the title compound, C(17)H(19)NO(3), the dihedral angle between the benzene rings is 68.0?(1)°. The C-O-C-C torsion angle of the atoms joining these rings is 179.7?(2)°. The atoms of the methanol group were refined as disordered over two sets of sites with fixed occupancies of 0.86 and 0.14. The H atoms of the hy-droxy group in the major component are disordered over a further two sets of sites with equal occupancies. This is a necessary arrangement to allow for hydrogen bonding without unrealistic H?H contacts. In the crystal, O-H?N and O-H?O hydrogen bonds connect mol-ecules into chains along [001].

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N-[4-(Phenyl-imino-meth-yl)phen-yl]acetamide 0.67-hydrate.

Project description:The title compound, C(15)H(14)N(2)O·0.67H(2)O, was prepared by the reaction of 4-acetoamine-benzaldehyde and aniline. The asymmetric unit contains six organic mol-ecules and four water mol-ecules. The dihedral angles between the aromatic ring planes in each organic mol-ecule vary from 42.4?(2) to 53.8?(2)°. In the crystal, an extensive network of inter-molecular N-H?O, O-H?N and O-H?O hydrogen bonds link the mol-ecules into [010] chains.

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