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2,2',2'',2'''-[Pyridine-2,6-diylbis(methyl-ene-nitrilo)]tetra-ethanol.

ABSTRACT: In the crystal structure of the title compound C(15)H(27)N(3)O(4), the mol-ecule is located on a twofold axis and the asymmetric unit contains one half-mol-ecule, with one N and one C atom lying on the rotation axis. The pyridine ring is the hydrogen-bond acceptor, while two hydroxyl O atoms act as hydrogen-bond donors in intra-molecular O-H⋯N and intermolecular O-H⋯N and O-H⋯O hydrogen bonds, thereby forming a closed hydrogen-bonded cage.

SUBMITTER: Cao SY

PROVIDER: S-EPMC3099931 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature

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2,2',2'',2'''-[Pyridine-2,6-diylbis(methyl-ene-nitrilo)]tetra-ethanol.

Cao Shou-Ying SY Zhou Cheng-He CH

Acta crystallographica. Section E, Structure reports online 20110331 Pt 4

In the crystal structure of the title compound C(15)H(27)N(3)O(4), the mol-ecule is located on a twofold axis and the asymmetric unit contains one half-mol-ecule, with one N and one C atom lying on the rotation axis. The pyridine ring is the hydrogen-bond acceptor, while two hydroxyl O atoms act as hydrogen-bond donors in intra-molecular O-H⋯N and intermolecular O-H⋯N and O-H⋯O hydrogen bonds, thereby forming a closed hydrogen-bonded cage. ...[more]

PMID: 21754024

Similar Datasets

Diaqua-tris-(nitrato-κ(2)O,O'){2,2'-[pyridine-2,6-diylbis(methyl-ene-oxy)]dibenzaldehyde-κO(1)}dysprosium(III)-2,2'-[pyridine-2,6-diylbis(methyl-ene-oxy)]dibenzaldehyde (1/1).

Project description:The title compound, [Dy(NO(3))(3)(C(21)H(17)NO(4))(H(2)O)(2)]·C(21)H(17)NO(4), may be considered as an organic-metalorganic 1:1 co-crystal, in which the two dialdehyde mol-ecules act as a ligand and as an organic moiety, respectively. The Dy(III) atom coordinates nine O atoms from the organic ligand, bidentate nitrate ions and water mol-ecules, approximating a square-face-tricapped trigonal-prismatic geometry. The coordinated dialdehyde is not planar: the uncoordinated oxybenzaldehyde group is twisted by 39.96 (4)° from the rest of the ligand. In contrast, the free organic moiety is almost planar, with an r.m.s. deviation of 0.15 Å. In the crystal, segregated stacks of dialdehyde are formed in the [100] direction. For the complex, the shortest π-π contact is found at 3.781 (2) Å, and for the free ligand, at 3.785 (2) Å. The crystal structure is further stabilized by O-H⋯O and O-H⋯N hydrogen bonds in which coordinated water mol-ecules are the donor groups.

| S-EPMC3470130 | biostudies-literature

{2,2'-[Pyridine-3,4-diylbis(nitrilo-methyl-idyne)]diphenolato}zinc(II).

Project description:The title compound, [Zn(C(19)H(13)N(3)O(2))], has been synthesized by the reaction of Zn(ClO(4))(2)·6H(2)O and the tetra-dentate Schiff base ligand 2,2'-[pyridine-3,4-diylbis(nitrilo-methyl-idyne)]diphenol (L). The coordination geometry of the Zn(II) ion is slightly distorted square-planar, formed by two N atoms and two O atoms from the L ligand.

| S-EPMC2971458 | biostudies-literature

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)°.

| S-EPMC2980064 | biostudies-literature

{2,2'-[3-Aza-pentane-1,5-diylbis(nitrilo-methyl-idyne)]dipyrrol-1-yl}(4-methyl-pyridine)cobalt(III) tetra-phenyl-borate.

Project description:The title compound, [Co(C(14)H(17)N(5))(C(6)H(7)N)](C(24)H(20)B) or [Co{(pyrrole)(2)dien}(4-Mepy)]BPh(4) where (pyrrole)(2)dien is 2,2'-[(3-aza-pentane-1,5-diylbis(nitrilo-methyl-idyne)]dipyrrole and 4-Mepy is 4-methyl-pyridine, contains a penta-dentate (pyrrole)(2)dien ligand furnishing an N(5) set, such that two of the pyrrole N atoms and two of the dien N atoms occupy the equatorial positions while one of the imine N atoms of the (pyrrole)(2)dien ligand occupies the axial position. The 4-methyl-pyridine ligand occupies an axial position trans to one of the imine N atoms of the penta-dentate ligand. In the observed conformation of the penta-dentate ligand, the pyrrole rings attain asymmetrical positions owing to the structural demands. The geometry of the resulting CoN(6) coordination can be described as distorted octa-hedral.

| S-EPMC2983608 | biostudies-literature

2,2'-[Nonane-1,9-diylbis(nitrilo-methyl-idyne)]diphenol.

Project description:In the title Schiff base compound, C(23)H(30)N(2)O(2), the complete mol-ecule is generated by crystallographic twofold symmetry, with one C atom lying on the rotation axis. The nonane chain adopts a linear conformation and the hydr-oxy group forms an intra-molecular O-H⋯N hydrogen bond to the imine group.

| S-EPMC2960073 | biostudies-literature

{2,2'-[5-Bromo-pyridine-2,3-diylbis(nitrilo-methyl-idyne)]diphenolato}chlorido(dimethyl-formamide)manganese(III).

Project description:In the title complex, [Mn(C(19)H(12)BrN(3)O(2))Cl(C(3)H(7)NO)], the Mn(III) ion is coordinated by two N and two O atoms from the tetra-dentate Schiff base ligand, one O atom from the dimethyl-formamide ligand and a Cl anion in a distorted octa-hedral geometry. In the crystal structure, weak inter-molecular C-H⋯Cl hydrogen bonds link the mol-ecules into centrosymmetric dimers with a short distance of 3.878 (3) Å between the centroids of the aromatic rings.

| S-EPMC2972037 | biostudies-literature

{3,3',5,5'-Tetra-meth-oxy-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

Project description:The title square-planar nickel complex, [Ni(C(20)H(22)N(2)O(6))], has Ni-N and Ni-O bond lengths of 1.8448 (14)/1.8478 (14) and 1.8536 (12)/1.8520 (12) Å. There is a slight twist in the two benzene rings at each end of the complex [dihedral angle = 11.11 (5)°]. All the atoms of the meth-oxy substitutents are in the plane of the ring to which they are attached except for one which deviates slightly [0.365 (3) Å]. In the crystal, weak C-H⋯O inter-molecular inter-actions connect the mol-ecules.

| S-EPMC2979626 | biostudies-literature

2,2'-[Imidazolidine-1,3-diylbis(methyl-ene)]diphenol.

Project description:In the title mol-ecule, C(17)H(20)N(2)O(2), the imidazolidine ring adopts a twist conformation. The mean plane through the five atoms of the imidazolidine ring makes dihedral angles of 70.18 (4) and 74.14 (4)° with the planes of the two aromatic rings. The dihedral angle between the benzene rings is 53.11 (5)°. Both phenol -OH groups form intra-molecular hydrogen bonds to the N atoms, with graph-set motif S(6). In the crystal, pairs of O-H⋯O hydrogen bonds link the mol-ecules into dimers with R(4) (4)(18) ring motifs. The crystal packing is further stabilized by C-H⋯O and weak C-H⋯π inter-actions.

| S-EPMC3254510 | biostudies-literature

2,2'-[2,3,5,6-Tetra-methyl-p-phenyl-ene-bis(methyl-enethio)]bis-(pyridine N-oxide).

Project description:Mol-ecules of the title compound, C(22)H(24)N(2)O(2)S(2), lie across centres of inversion. The two thio-pyridine N-oxide groups adopt a stepped trans configuration with respect to the benzene ring, by virtue of the symmetry. The oxopyridinium ring forms a dihedral angle of 79.9 (2)° with the benzene ring. The crystal structure is stabilized by a strong π-π inter-action between the pyridinium rings of adjacent mol-ecules [ring centroid-centroid distance = 3.464 (3) Å].

| S-EPMC2960153 | biostudies-literature

{3,3',5,5'-Tetra-meth-oxy-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenol-ato}-copper(II).

Project description:In the title square-planar copper complex, [Cu(C(20)H(22)N(2)O(6))], the Cu-N and Cu-O bond lengths are significantly longer than those of its isostructural nickel analog. The title structure is related to that of the corresponding monohydrate. There are significant differences in the conformations of the two complexes. While the monohydrate is mainly planar, in the title compound there is a slight twist in the two benzene rings at each end of the complex [dihedral angle = 13.14 (6)°]. All the atoms of the meth-oxy substitutents are in the plane of the ring to which they are attached (r.m.s. deviation = 0.0079 Å) except for one of the meth-oxy C atoms, which deviates slightly [0.309 (4) Å]. In the crystal, weak C-H⋯O inter-molecular inter-actions link the mol-ecules.

| S-EPMC2979637 | biostudies-literature

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