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

ABSTRACT: In the title compound, C(22)H(28)N(2)O(6), strong intra-molecular O-H?N hydrogen bonds and weak inter-molecular C-H?O hydrogen bonds stabilize the three-dimensional supra-molecular structure.

SUBMITTER: Dong WK

PROVIDER: S-EPMC2961880 | biostudies-other | 2008 Jun

REPOSITORIES: biostudies-other

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

Dong Wen-Kui WK Zhao Chun-Yu CY Zhong Jin-Kui JK Tang Xiao-Lu XL Yu Tian-Zhi TZ

Acta crystallographica. Section E, Structure reports online 20080621 Pt 7

In the title compound, C(22)H(28)N(2)O(6), strong intra-molecular O-H⋯N hydrogen bonds and weak inter-molecular C-H⋯O hydrogen bonds stabilize the three-dimensional supra-molecular structure. ...[more]

PMID: 21202947

Similar Datasets

Redetermination of 6,6'-dimeth-oxy-2,2'-[hexane-1,6-diylbis(nitrilo-dimethyl-idyne)]diphenol.

Project description:The title compound, C(22)H(28)N(2)O(4), contains two independent centrosymmetric mol-ecules (A and B). In the previous structure determination [Xia et al. (2007 ?). Acta Cryst. E63, o259] both A and B were modelled as neutral mol-ecules with the H atoms of the the O-H groups included in calculated positions. In this redetermination, the transferrable H atoms were located in difference maps and freely refined, indicating that one mol-ecule (A) crystallizes in the neutral (nonzwitterionic) form and the other in the zwitterionic form, namely 6,6'-dimeth-oxy-2,2'-[hexane-1,6-diylbis(nitrilo-dimethyl-idyne)]-di-phenol-6,6'-dimeth-oxy-2,2'-[hexane-1,6-diylbis(nitrilio-di-methyl-idyne)]diphenolate (1/1). This finding is supported by significant differences in the C-O(H) (A) and C-O(-) (B) bond lengths. In the crystal, the zwitterionic mol-ecules (B) are involved in inter-molecular N-H?O hydrogen bonds forming one-dimensional chains along [001]. Each independent mol-ecule forms an intra-molecular O-H?N (A) or N-H?O (B) hydrogen bond. In mol-ecule B, one of the -CH(2)- groups is disordered over two sets of sites with refined occupancies of 0.659?(8) and 0.341?(8).

| S-EPMC3151875 | biostudies-other

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.

| S-EPMC3008137 | biostudies-literature

6,6'-Dihydr-oxy-2,2'-[(butane-1,4-diyldi-oxy)bis-(nitrilo-methyl-idyne)]diphenol.

Project description:The mol-ecule of the centrosymmetric title compound, C(18)H(20)N(2)O(6), assumes an E configuration with respect to the azomethine C=N bond. The imino group is coplanar with the aromatic ring. Intra-molecular O-H?O and O-H?N bonds are found between the hydroxyl groups and adjacent O (or N) atoms. In the crystal structure, inter-molecular O-H?O bonds link each mol-ecule to two others, forming a layered network.

| S-EPMC2959278 | biostudies-literature

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

Project description:The title Schiff base bis-oxime compound, C(20)H(24)N(2)O(6), lies across an inversion centre and adopts an E configuration with respect to the C=N bond. In the mol-ecule, the oxime group is roughly coplanar with the benzene ring, forming a dihedral angle of 1.77?(2)°. An intra-molecular O-H?N hydrogen bond forms a six-membered ring with an S(6) motif. Weak inter-molecular C-H?O hydrogen bonding is present in the crystal structure.

| S-EPMC3009145 | biostudies-literature

5,5'-Dimeth-oxy-2,2'-[(nonane-1,9-diyldi-oxy)bis-(nitrilo-methyl-idyne)]diphenol.

Project description:The mol-ecule of the title compound, C(25)H(34)N(2)O(6), adopts a fully extended configuration. The oxime (-CH=N-O-) group is coplanar with the aromatic ring and the two benzene rings are almost parallel, making a dihedral angle of 0.16?(3)°. In the crystal structure, strong intra-molecular O-H?N hydrogen bonds generate six-membered S(6) ring motifs. Inter-molecular C-H?O hydrogen bonds link each mol-ecule to five others, forming an infinite three-dimensional supra-molecular structure. The crystal is further stabilized by ?-? stacking inter-actions between neighbouring benzene rings [centroid-centroid distance = 3.744?(2)?Å].

| S-EPMC2971058 | biostudies-literature

6,6'-Dieth-oxy-2,2'-[hexane-1,6-diylbis(nitrilo-methanylyl-idene)]diphenol.

Project description:The title compound, C(24)H(32)N(2)O(4), is a polydentate Schiff base and reveals strong intra-molecular O-H?N hydrogen bonding between the hy-droxy O atom and the imino N atom, with an O?N distance of 2.570?(3)?Å. In the crystal, a centre of inversion is located at the mid-point of the compound. The diimino-hexyl-ene chain is almost ideally in the anti conformation, with an average dihedral angle of 179.0°.

| S-EPMC3099770 | biostudies-literature

6,6'-Dimeth-oxy-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methyl-idyne)]diphenol.

Project description:The title Schiff base compound, C(21)H(26)N(2)O(4), exhibits two crystallographically independent mol-ecules in the asymmetric unit with similar conformations. The imino groups are coplanar with the benzene rings; the maximum deviations of the N atoms from the planes comprising the benzene rings and the imino groups are -0.037 (4), 0.013 (4), -0.021 (5), and 0.008 (5) Å. The dihedral angles between the benzene rings in the two mol-ecules are 53.64 (17) and 51.93 (17)°. Strong intra-molecular O-H⋯N hydrogen bonds generate S(6) ring motifs. The N atoms are also in close proximity to the H atoms of the dimethyl-propane groups, with H⋯N distances between 2.54 and 2.75 Å. The crystal structure is further stabilized by weak inter-molecular C-H⋯O hydrogen bonds, weak inter-molecular C-H⋯π inter-actions and π-π contacts involving the imine C atom and two C atoms from the adjacent benzene rings.

| S-EPMC2967940 | biostudies-literature

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 ?-? stacking inter-actions [interplana distance = 2.986?(2)?Å], forming a three-dimensional network.

| S-EPMC2962038 | biostudies-literature

6,6'-Dimeth-oxy-2,2'-[4,5-dimethyl-o-phenyl-enebis(nitrilo-methyl-idyne)]diphenol monohydrate.

Project description:In the title compound, C(24)H(24)N(2)O(4)·H(2)O, the dihedral angles between the central benzene ring and the two outer benzene rings of the Schiff base are 65.06?(9) and 3.02?(9)°. Strong intra-molecular O-H?N hydrogen bonds generate S(6) ring motifs. The H atoms of the water mol-ecule act as donors in the formation of bifurcated O-H?(O,O) inter-molecular hydrogen bonds with the O atoms of the hydr-oxy and meth-oxy groups with R(1) (2)(5) ring motifs; these may influence the mol-ecular conformation.

| S-EPMC2983671 | biostudies-literature

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

Project description:In the title compound, C(22)H(20)N(2)O(4), the central benzene ring forms dihedral angles of 3.2 (2) and 61.1 (1)° with the two outer substituted benzene rings. Intra-molecular O-H⋯N hydrogen bonds are formed by both hydroxyl groups.

| S-EPMC2968897 | biostudies-literature

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