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1-{[4-(4-{[(2-Oxidonaphthalen-1-yl)methyl-idene]aza-nium-yl}phen-oxy)phen-yl]iminiumylmeth-yl}naphthalen-2-olate.

ABSTRACT: The title Schiff base compound, C34H24N2O3, was prepared by a condensation reaction of bifunctional aromatic diamine (4,4'-diamino-diphenyl ether) with hy-droxy-naphtaldehyde. The asymmetric unit contains two independent mol-ecules with similar conformations. The compound contains a central oxygen bridge and two functionalized [(E)-(phenyl-iminio)meth-yl]naphthalen-2-olate units. The dihedral angles between the benzene rings linking to the central O atom are 74.64?(19) and 69.85?(18)° in the two independent mol-ecules. Intra-molecular O-H?O hydrogen bonding occurs between the protonated imino N atoms and deprotonated hy-droxy O atoms in both mol-ecules. In the crystal, weak C-H?O hydrogen bonds are observed.

SUBMITTER: Haffar D

PROVIDER: S-EPMC3629627 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature

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1-{[4-(4-{[(2-Oxidonaphthalen-1-yl)methyl-idene]aza-nium-yl}phen-oxy)phen-yl]iminiumylmeth-yl}naphthalen-2-olate.

Haffar Djahida D Daoud Djamel D Douadi Tahar T Bouzidi Leila L Chafaa Salah S

Acta crystallographica. Section E, Structure reports online 20130323 Pt 4

The title Schiff base compound, C34H24N2O3, was prepared by a condensation reaction of bifunctional aromatic diamine (4,4'-diamino-diphenyl ether) with hy-droxy-naphtaldehyde. The asymmetric unit contains two independent mol-ecules with similar conformations. The compound contains a central oxygen bridge and two functionalized [(E)-(phenyl-iminio)meth-yl]naphthalen-2-olate units. The dihedral angles between the benzene rings linking to the central O atom are 74.64 (19) and 69.85 (18)° in the two ...[more]

PMID: 23634114

Similar Datasets

1-[((E)-{2-[(2-Nitro-benz-yl)(2-{[(E)-(2-oxidonaphthalen-1-yl)methyl-idene]aza-nium-yl}eth-yl)amino]-eth-yl}aza-niumyl-idene)meth-yl]naphthalen-2-olate monohydrate.

Project description:The title Schiff base compound, C(33)H(30)N(4)O(4)·H(2)O, adopts an E configuration with respect to each C=N double bond. In the mol-ecule, there are naphthoxide anions and the protonated imino N atoms. Intra-molecular N-H⋯O hydrogen bonds lead to the formation of approximately planar (maximum deviation 0.029 Å for H atom) six-membered rings.. In the crystal, mol-ecules are linked by O-H⋯O and N-H⋯O hydrogen bonds as well as C-H⋯O contacts, leading to the formation of a three-dimensional network.

| S-EPMC3238971 | biostudies-literature

[2-Acet-oxy-3-(naphthalen-1-yl-oxy)prop-yl](propan-2-yl)aza-nium chloride monohydrate.

Project description:The title compound, C18H24NO3 (+)·Cl(-)·H2O, was synthesized by the reaction of propranolol hydro-chloride with acetyl chloride in chloro-form followed by slow evaporation in air. In the cation, the dihedral angle between the planes of the naphthalene ring system and the acetate group is 71.1?(2)°. An intra-molecular N-H?O hydrogen bond results in the formation of a non-planar pseudo-ring, with the ether O and the H atom displaced by -1.328?(2) and 0.65?Å, respectively, from the plane of the other ring atoms. The cation and anion are linked by an N-H?Cl hydrogen bond. The water molecule is linked to a methyl H atom by C-H?O hydrogen bond.

| S-EPMC3629540 | biostudies-literature

(2-Meth-oxy-benz-yl)(2-meth-oxy-benzyl-idene)aza-nium (2-meth-oxy-phen-yl)methanaminium tetra-chloridozincate(II) monohydrate.

Project description:The title compound, (C(8)H(12)NO)(C(16)H(18)NO(2))[ZnCl(4)]·H(2)O, was obtained as a by-product of the Zn(2+) and HCl catalyzed condensation of (2-meth-oxy-phen-yl)methanamine in water. Both cations feature an intra-molecular N-H?O hydrogen bond. In the crystal, the components are linked by an extensive three-dimensional network of N-H?O, O-H?Cl and N-H?Cl hydrogen bonds (three of them bifurcated). Weak C-H?O intera-ctions also occur.

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Zwitterionic 1-{(E)-[(2-methyl-phen-yl)iminium-yl]meth-yl}naphthalen-2-olate.

Project description:The title Schiff base, C18H15NO, crystallizes in its zwitterionic form and an N-H?O hydrogen bond closes an S(6) ring. The dihedral angle between the aromatic ring systems is 36.91?(10)°. Weak aromatic ?-? stacking occurs in the crystal [minimum centroid-centroid separation = 3.7771?(15)?Å].

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(Meth-oxy-methyl-idene)di-methyl-aza-nium tetra-phenyl-borate aceto-nitrile monosolvate.

Project description:In the cation of the title salt, C4H10NO(+)·C24H20B(-)·C2H3N, the C-N bond lengths are 1.2864?(16), 1.4651?(17) and 1.4686?(16)?Å, indicating double- and single-bond character, respectively. The C-O bond length of 1.2978?(15)?Å shows double-bond character, pointing towards charge delocalization within the NCO plane of the iminium ion. C-H?? inter-actions are present between the methine H atom and two of the phenyl rings of the tetra-phenyl-borate ion. The latter forms an aromatic pocket in which the cation is embedded. The iminium ion is further connected through a C-H?N hydrogen bond to the aceto-nitrile mol-ecule. This leads to the formation of a two-dimensional supramolecular pattern along the bc plane.

| S-EPMC3998454 | biostudies-literature

(But-oxy-methyl-idene)di-methyl-aza-nium tetra-phenyl-borate aceto-nitrile monosolvate.

Project description:In the title solvated salt, C7H16NO(+)·C24H20B(-)·C2H3N, the C-N bond lengths in the cation are 1.2831?(19), 1.467?(2) and 1.465?(2)?Å, indicating double- and single-bond character, respectively. The C-O bond length of 1.2950?(18)?Å shows a double-bond character, pointing towards charge delocalization within the NCO plane of the iminium ion. The two C atoms of the n-butyl group are disordered over the two sites, with refined occupancy ratios of 0.890?(5):0.110?(5) and 0.888?(4):0.112?(4). In the crystal, C-H?? inter-actions occur between the methine H atom, H atoms of the -N(CH3)2 and -CH2 groups of the cation, and two of the phenyl rings of the tetra-phenyl-borate anion. The latter inter-action forms an aromatic pocket in which the cation is embedded. Thus, a two-dimensional pattern is created in the ac plane.

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Crystal structure of 1,1'-{(dodecane-1,12-di-yl)bis-[(aza-niumylyl-idene)methanylyl-idene]}bis-(naphthalen-2-olate).

Project description:The title compound, C34H40N2O2, exists in an extended conformation and has crystallographically imposed centrosymmetry. The crystal packing can be described as being composed of parallel layers stacked along [010]. The zwitterionic structure is stabilized by an intra-molecular N-H?O hydrogen-bond inter-action.

| S-EPMC4420129 | biostudies-literature

Crystal structure of 1,1'-{(pentane-1,5-di-yl)bis[(aza-niumylyl-idene)methanylyl-idene]}bis(naphthalen-2-olate).

Project description:The whole mol-ecule of the title compound, C27H26N2O2, is generated by twofold rotational symmetry, with the central C atom of the pentyl chain located on the twofold rotation axis. The compound crystallizes as a bis-zwitterion, and there are two intra-molecular N-H?O hydrogen bonds generating S(6) ring motifs. In the crystal, mol-ecules are linked by pairs of C-H?O hydrogen bonds, forming ribbons propagating along [001], and enclosing R 2 (2)(22) ring motifs.

| S-EPMC4555373 | biostudies-literature

2-[(Di-methyl-phenyl-phosphanyl-idene)aza-nium-yl]-5-methyl-benzene-sulfonate benzene monosolvate.

Project description:The title compound, C15H18NO3PS·C6H6, is a rare example of a crystallographically characterized exocyclic phosphiniminium-arene-sulfonate zwitterion, which crystallises as its benzene solvate. The crystal structure shows that the N atom is protonated and that the iminium H atom forms both intra- and inter-molecular hydrogen bonds to the single-bonded sulfonate O atom in an R 2 (2)(4) graph-set motif. The dihedral angle between the aromatic rings in the main molecule is 89.49?(8)°.

| S-EPMC3685103 | biostudies-literature

2-Hy-droxy-5-[(E)-(1H-indol-3-yl-methyl-idene)aza-nium-yl]benzoate.

Project description:The zwitterionic title compound, C(16)H(12)N(2)O(3), was obtained as a result of the condensation of 5-amino-salicylic acid and 1H-indole-3-carbaldehyde. The whole mol-ecule is roughly planar: the 4-hy-droxy-anilinic group and the 1H-indole-3-carbaldehyde moieties are only slightly twisted, making a dihedral angle of 7.77?(11)°, whereas, the carboxyl-ate group makes a dihedral angle of 3.34?(45)° with the parent 4-hy-droxy-anilinic group. S(6) ring motifs are formed due to intra-molecular O-H?O hydrogen bonding. In the crystal, inter-molecular N-H?O and C-H?O hydrogen bonds build up pseudo-rings with R(1) (2)(4), R(2) (1)(7) and R(2) (2)(14) ring motifs. These pseudo-dimers are further linked by N-H?O hydrogen bonds into a chain extending along [101]. C-H?? inter-actions also occur, along with offset ?-? inter-actions between the anilinic phenyl and the heterocyclic five-membered rings with a centroid-centroid distance of 3.5716?(19)?Å.

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