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6,6'-Dimeth-oxy-2,2'-[(E,E')-(4-chloro-m-phenyl-ene)bis-(nitrilo-methyl-idyne)]diphenol.

ABSTRACT: The title compound, C(22)H(19)ClN(2)O(4), has the appearance of a warped butterfly. One 2-hydr-oxy-3-methoxy-benzyl-idene-amino fragment is planar [with a maximum deviation of 0.056?(3)?Å] and forms a dihedral angle of 9.85?(9)° with the central benzene ring. The other fragment is not planar; however, the methoxy-phenol group is planar [with the maximum deviation of 0.033?(2)?Å] and makes a dihedral angle of 41.7?(3)° with the central benzene ring. The mol-ecule is stabilized by intra-molecular O-H?N hydrogen bonding. The crystal structure is stabilized by weak inter-molecular C-H?O hydrogen bonding and C-H?? inter-actions.

SUBMITTER: Yamin BM

PROVIDER: S-EPMC2970302 | biostudies-literature | 2009 Sep

REPOSITORIES: biostudies-literature

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6,6'-Dimeth-oxy-2,2'-[(E,E')-(4-chloro-m-phenyl-ene)bis-(nitrilo-methyl-idyne)]diphenol.

Yamin Bohari M BM Bakar Siti Najihah A SN Kassim Karimah K Bahron Hadariah H

Acta crystallographica. Section E, Structure reports online 20090930 Pt 10

The title compound, C(22)H(19)ClN(2)O(4), has the appearance of a warped butterfly. One 2-hydr-oxy-3-methoxy-benzyl-idene-amino fragment is planar [with a maximum deviation of 0.056 (3) Å] and forms a dihedral angle of 9.85 (9)° with the central benzene ring. The other fragment is not planar; however, the methoxy-phenol group is planar [with the maximum deviation of 0.033 (2) Å] and makes a dihedral angle of 41.7 (3)° with the central benzene ring. The mol-ecule is stabilized by intra-molecular ...[more]

PMID: 21578010

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6,6'-Dimeth-oxy-2,2'-[p-phenyl-ene-bis(nitrilo-methyl-idyne)]diphenol chloro-form disolvate.

Project description:The title compound, C(22)H(20)N(2)O(4)·2CHCl(3), a new Schiff base compound, lies across a crystallographic inversion centre. An intra-molecular O-H⋯N hydrogen bond generates a six-membered ring, producing an S(6) ring motif. Inter-molecular bifurcated C-H⋯O hydrogen bonds involving the two O atoms of the Schiff base ligand and the H atom of the chloro-form solvent of crystallization, generate an R(2) (1)(5) ring motif. The crystal structure is stabilized by inter-molecular C-H⋯π and π-π inter-actions [centroid to centroid distance = 3.6158 (10) Å]. In the crystal structure, mol-ecules are stacked down the c axis.

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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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6,6'-Dimeth-oxy-2,2'-[(cyclo-hexane-1,2-di-yl)bis-(nitrilo-methyl-idyne)]diphenol.

Project description:The mol-ecule of the title compound, C(22)H(26)N(2)O(4), has two azomethine linkages, both of which are in an E configuration. The cyclo-hexyl ring adopts a chair conformation. The dihedral angle between the benzene rings is 66.57 (9)°. The mol-ecular structure is stabilized by two intra-molecular O-H⋯N hydrogen bonds.

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{μ-6,6'-Dimeth-oxy-2,2'-[1,2-phenyl-ene-bis(nitrilo-methyl-idyne)]diphenolato}methano-lcopper(II)sodium(I).

Project description:In the title complex, [NaCu(C(22)H(18)N(2)O(4))Cl(CH(3)OH)], the Cu atom lies nearly in the plane defined by the N(2)O(2) core of donor atoms, the out-of-plane distance being 0.001 (2) Å. The anion provides a planar cavity of four O atoms which accommodates a sodium cation. The coordination geometry around sodium is completed by the methanol O atom and a chloride ion. The four O atoms define a coordination plane containing the sodium cation [maximum displacement from the mean plane through the five atoms = 0.152 (3) Å for Na]. The crystal structure is stabilized by inter-molecular C-H⋯Cl and O-H⋯Cl hydrogen bonds, which link the mol-ecules into dimers. The crystal packing is further stabilized by weak π-π stacking inter-actions [centroid-centroid distances of 3.442 (4), 3.482 (3), 3.350 (2), 3.531 (4) 3.575 (2) and 3.604 (2) Å].

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6,6'-Dimeth-oxy-2,2'-[pyridine-2,3-diylbis(nitrilo-methyl-idyne)]diphenol.

Project description:In the title compound, C(21)H(19)N(3)O(4), two intramolecular N-H?O hydrogen bonds generate two six-membered rings. The dihedral angles between the central heterocyclic ring and the two pendant rings are 61.5?(2) and 63.5?(1)°.

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3,3'-Dimeth-oxy-2,2'-[(4,5-dimethyl-o-phenyl-ene)bis-(nitrilo-methanylyl-idene)]diphenol.

Project description:The asymmetric unit of the title compound, C(24)H(24)N(2)O(4), comprises two crystallographically independent mol-ecules A and B. The dihedral angles between the central dimethyl-substituted benzene ring and the two outer benzene rings are 49.5 (1) and 5.06 (11)° in mol-ecule A, and 42.55 (8) and 5.77 (9)° in mol-ecule B. In each mol-ecule, two strong intra-molecular O-H⋯N hydrogen bonds generate two S(6) ring motifs. The crystal structure is further stabilized by inter-molecular π-π [centroid-centroid distances of 3.591 (1)-3.876 (1) Å] inter-actions.

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