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4,4'-Dimethyl-1,1'-[ethyl-enedioxy-bis(nitrilo-methyl-idyne)]dibenzene.

ABSTRACT: The Schiff base, C(18)H(20)N(2)O(2), which lies about an inversion centre, adopts a linear conformation. The mol-ecules are packed by C-H?? inter-actions, forming a two-dimensional supra-molecular network.

SUBMITTER: Ding YJ

PROVIDER: S-EPMC2969725 | biostudies-literature | 2009 May

REPOSITORIES: biostudies-literature

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4,4'-Dimethyl-1,1'-[ethyl-enedioxy-bis(nitrilo-methyl-idyne)]dibenzene.

Ding Yu-Jie YJ Xue Zhu-Lian ZL Dong Wen-Kui WK Sun Yin-Xia YX Wu Jian-Chao JC

Acta crystallographica. Section E, Structure reports online 20090507 Pt 6

The Schiff base, C(18)H(20)N(2)O(2), which lies about an inversion centre, adopts a linear conformation. The mol-ecules are packed by C-H⋯π inter-actions, forming a two-dimensional supra-molecular network. ...[more]

PMID: 21583065

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3,3'-Dibromo-1,1'-[ethyl-enedioxy-bis(nitrilo-methyl-idyne)]dibenzene.

Project description:In the centrosymmetric title compound, C(16)H(14)Br(2)N(2)O(2), the intra-molecular interplanar distance between the parallel benzene rings is 1.305 (3) Å, while the inter-molecular interplanar distance (between neighbouring mol-ecules) is 3.463 (3) Å, exhibiting obvious strong inter-molecular π-π stacking inter-actions.

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{4,4'-Dimeth-oxy-2,2'-[ethyl-enedioxy-bis(nitrilo-methyl-idyne)]diphenolato}copper(II).

Project description:The title complex, [Cu(C(18)H(18)N(2)O(6))], was synthesized by the reaction of copper(II) acetate mono-hydrate with the ligand 4,4'-dimeth-oxy-2,2'-[ethyl-enedioxy-bis(nitrilo-methyl-idyne)]diphenol (H(2)L). The Cu atom is coordinated by two O atoms and two N atoms of the L(2-) unit. A bridged dimer is formed through inter-molecular Cu⋯O inter-actions [Cu⋯O = 1.9408 (15) Å], creating a distorted square-pyramidal geometry about the Cu atoms.

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2,2'-Dichloro-1,1'-[(pentane-1,5-diyldi-oxy)bis-(nitrilo-methyl-idyne)]dibenzene.

Project description:The mol-ecule of the title compound, C(19)H(20)Cl(2)N(2)O(2), which lies across a crystallographic inversion centre, adopts a linear configuration. The dihedral angle between the two halves of the mol-ecule is 5.14?(2)°. In the crystal structure, inter-molecular C-H?O hydrogen bonds link neighbouring mol-ecules into an infinite zigzag chain supra-molecular structure.

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2,2'-Dichloro-1,1'-[(butane-1,4-diyldi-oxy)bis-(nitrilo-methyl-idyne)]dibenzene.

Project description:The mol-ecule of the title compound, C(18)H(18)Cl(2)N(2)O(2), lies across a crystallographic inversion centre and adopts an E configuration with respect to the azomethine C=N bond. The imino group is coplanar with the aromatic ring. Within the mol-ecule, the planar units are parallel, but extend in opposite directions from the dimethyl-ene bridge. In the crystal structure, the title compound exhibits a layer packing structure via weak π-π stacking inter-actions [inter-molecular plane-to-plane distances between adjacent aromatic rings are 3.461 (3) Å]. Mol-ecules in each layer are linked by inter-molecular C-H⋯O hydrogen-bonding inter-actions.

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2,2'-Dichloro-1,1'-[(propane-1,3-diyldi-oxy)bis-(nitrilo-methyl-idyne)]dibenzene.

Project description:The title compound, C(17)H(16)Cl(2)N(2)O(2), assumes a V-shape configuration with a dihedral angle between the two halves of the mol-ecule of 79.60 (4)°. The asymmetric unit comprises one half-mol-ecule with a crystallographic twofold rotation axis passing through the central C atom. There are weak inter-molecular π-π stacking inter-actions between neighbouring benzene rings with inter-molecular plane-to-plane distances of 3.277 (6) and 3.465 (5) Å along the a and c axes, respectively. In the crystal structure, weak inter-molecular C-H⋯O bonds link each mol-ecule to four others to form an infinite three-dimensional network.

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4,4'-Dimethyl-2,2'-[1,2-phenyl-enebis(nitrilo-methyl-idyne)]diphenol.

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4,4'-[Propane-1,2-diyl-bis(nitrilo-methyl-idyne)]-dibenzo-nitrile-4,4'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]dibenzonitrile [0.796 (2)/0.204 (2)].

Project description:The title cocrystal, 0.796C(19)H(16)N(4)·0.204C(18)H(14)N(4), is a disordered mixture of two potentially bidentate Schiff base ligands. The difference in the two components of the cocrystal is the replacement of the methyl group in the linkage between the imine N atoms in the major component of the Schiff base ligand by an H atom. The imino (C=N) functional groups are coplanar with the benzene rings (only the major component) and extend in opposite directions (both components). Inter-molecular π-π inter-actions with a centroid-to-centroid distance of 3.7371 (8) Å are observed in the crystal packing.

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1,1'-[(Hexane-1,6-diyldi-oxy)bis-(nitrilo-methyl-idyne)]dinaphthalene.

Project description:The title compound, C(28)H(28)N(2)O(2), was synthesized by condensation of 1-naphthaldehyde with 1,6-bis-(amino-oxy)hexane in ethanol. The mol-ecule is disposed about a crystallographic centre of symmetry. In the crystal structure, mol-ecules are linked through strong inter-molecular π-π stacking inter-actions [interplana distance = 2.986 (2) Å], forming a three-dimensional network.

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4,4'-[2,2-Dimethyl-propane-1,3-diyl-bis(nitrilo-methyl-idyne)]dibenzonitrile.

Project description:The title compound, C(21)H(20)N(4), is a bidentate Schiff base ligand. An intra-molecular C-H?N hydrogen bond forms a five-membered ring, producing an S(5) ring motif. The cyano and imino [-C(H(2))-N=C-] functional groups are coplanar with the benzene ring in each half of the mol-ecule. The packing of the mol-ecules is controlled by C-H?? and ?-? inter-actions [centroid-to-centroid distance = 3.6944?(8)?Å].

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