Browse
Submit Data
Databases
API
Help

Dataset Information

9 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Crystal structure of (E)-2-[(4-hy-droxy-benzyl-idene)aza-nium-yl]benzoate.

ABSTRACT: The title Schiff base, C14H11NO3, crystallizes as a zwitterion (i.e. proton transfer from the carb-oxy-lic acid group to the imine N atom). The dihedral angle between the aromatic rings is 19.59?(6)° and an intra-molecular N-H?O hydrogen bond closes an S(6) ring. In the crystal, inversion dimers linked by pairs of O-H?O hydrogen bonds generate R 2 (4)(24) loops. The dimers are linked by C-H?O inter-actions, generating (211) sheets.

SUBMITTER: Tahir MN

PROVIDER: S-EPMC4186171 | biostudies-other | 2014 Sep

REPOSITORIES: biostudies-other

ACCESS DATA

Json Xml

Publications

Crystal structure of (E)-2-[(4-hy-droxy-benzyl-idene)aza-nium-yl]benzoate.

Tahir M Nawaz MN Khan Abdul Haleem AH Shad Hazoor Ahmad HA

Acta crystallographica. Section E, Structure reports online 20140816 Pt 9

The title Schiff base, C14H11NO3, crystallizes as a zwitterion (i.e. proton transfer from the carb-oxy-lic acid group to the imine N atom). The dihedral angle between the aromatic rings is 19.59 (6)° and an intra-molecular N-H⋯O hydrogen bond closes an S(6) ring. In the crystal, inversion dimers linked by pairs of O-H⋯O hydrogen bonds generate R 2 (4)(24) loops. The dimers are linked by C-H⋯O inter-actions, generating (211) sheets. ...[more]

PMID: 25309195

Similar Datasets

2-[(2-Hy-droxy-4-meth-oxy-benzyl-idene)aza-nium-yl]benzoate monohydrate.

Project description:In the title compound, C(15)H(13)NO(4)·H(2)O, the Schiff base exists in a zwitterionic form and a bifurcated intra-molecular N-H⋯(O,O) hydrogen bond generates two S(6) rings. The dihedral angle between the two benzene rings is 25.8 (2)°. The crystal structure is stabilized by inter-molecular O-H⋯O hydrogen bonds.

| S-EPMC3006953 | 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.

| S-EPMC3011759 | biostudies-literature

2-Hy-droxy-5-{[(E)-4-meth-oxy-benzyl-idene]aza-nium-yl}benzoate.

Project description:In the title zwitterion, C(15)H(13)NO(4), obtained from the condensation of 5-amino-salicylic acid and 4-meth-oxy-benz-alde-hyde, the 4-hydoxyanilinic group of the 5-amino-salicylic acid moiety and the 4-meth-oxy-benzaldehyde moiety are twisted with respect to one another, making a dihedral angle of 10.37?(7)°. The carboxyl-ate group makes a dihedral angle of 5.7?(2)° with the parent 4-hydoxyanilinic group. An intra-molecular O-H?O hydrogen bond forms an S(6) ring motif. In the crystal, inter-molecular C-H?O and N-H?O hydrogen bonds with R(2) (1)(7) ring motifs link the mol-ecules into infinite chains extending along the c axis. The occurence of slipped ?-? stacking between symmetry-related aromatic rings reinforces the packing.

| S-EPMC2983260 | biostudies-other

Crystal structure of <i>rac</i>-4-[2-(<i>tert</i>-butyl-aza-nium-yl)-1-hy-droxy-eth-yl]-2-(hy-droxy-meth-yl)phenol benzoate.

Project description:The title salt, C13H22NO3+·C7H5O2-, comprises one salbutamol cation {sys-tematic name: 4-[2-(tert-butyl-aza-nium-yl)-1-hy-droxy-eth-yl]-2-(hy-droxy-meth-yl)phenol} and a benzoate anion. The cation shows disorder of the hy-droxy group [occupancy ratio 0.738?(3):0.262?(3)] at the stereogenic C atom. The non-planar benzoate anion [the dihedral angle between the benzene ring and the carboxyl group is 11.30?(8)°] is linked to the salbutamol cation by a medium-strength O-H?O hydrogen bond. Other inter-molecular O-H?O and N-H?O hydrogen bonds of weaker nature give rise to [001] chains.

| S-EPMC5588574 | biostudies-literature

Ethyl [(benzyl-aza-nium-yl)(2-hy-droxy-phen-yl)meth-yl]phospho-nate.

Project description:The title compound, C(16)H(20)NO(4)P, crystallizes as a zwitterion. In the mol-ecule, the two aromatic rings form a dihedral angle of 55.2?(1)°. In the crystal, inter-molecular N-H?O and O-H?O hydrogen bonds link the mol-ecules into columns propagating in [010].

| S-EPMC3213461 | biostudies-literature

Crystal structures of the 1:1 salts of 2-amino-4-nitro-benzoate with each of (2-hy-droxy-eth-yl)di-methyl-aza-nium, tert-but-yl(2-hy-droxy-eth-yl)aza-nium and 1,3-dihy-droxy-2-(hy-droxy-meth-yl)propan-2-aminium.

Project description:The crystal and mol-ecular structures of the title mol-ecular salts, C4H12NO+·C7H5N2O4 -, (I), C6H16NO+·C7H5N2O4 -, (II), and C4H12NO3 +·C7H5N2O4 -, (III), are described. The common feature of these salts is the presence of the 2-amino-4-nitro-benzoate anion, which exhibit non-chemically significant variations in the conformational relationships between the carboxyl-ate and nitro groups, and between these and the benzene rings they are connected to. The number of ammonium-N-H H atoms in the cations increases from one to three in (I) to (III), respectively, and this variation significantly influences the supra-molecular aggregation patterns in the respective crystals. Thus, a linear supra-molecular chain along [100] sustained by charge-assisted tertiary-ammonium-N-H?O(carboxyl-ate), hy-droxy-O-H?O(carboxyl-ate) and amino-N-H?O(carboxyl-ate) hydrogen-bonds is apparent in the crystal of (I). Chains are connected into a three-dimensional architecture by methyl-C-H?O(hy-droxy) and ?-? inter-actions, the latter between benzene rings [inter-centroid separation = 3.5796?(10)?Å]. In the crystal of (II), a supra-molecular tube propagating along [901] arises as a result of charge-assisted secondary-ammonium-N-H?O(carboxyl-ate) and hy-droxy-O-H?O(carboxyl-ate) hydrogen-bonding. These are connected by methyl-ene- and methyl-C-H?O(nitro) and ?-? stacking between benzene rings [inter-centroid separation = 3.5226?(10)?Å]. Finally, double-layers parallel to (100) sustained by charge-assisted ammonium-N-H?O(carboxyl-ate), ammonium-N-H?O(hy-droxy) and hy-droxy-O-H?O(carboxyl-ate) hydrogen-bonds are apparent in the crystal of (III). These are connected in a three-dimensional architecture by amine-N-H?O(nitro) hydrogen-bonds.

| S-EPMC6281114 | biostudies-literature

2-[(E)-(2,4-Dihy-droxy-benzyl-idene)aza-nium-yl]-3-phenyl-propano-ate.

Project description:The title compound, C(16)H(15)NO(4), exists as a zwitterion in the solid state, with the carb-oxy-lic acid group being deprotonated and the imine N atom being protonated. The mol-ecule adopts an E configuration about the C=N double bond. The dihedral angle between the benzene rings is 46.34?(4)°. An intra-molecular N-H?O hydrogen bond generates an S(6) ring motif. In the crystal, adjacent mol-ecules are connected by inter-molecular O-H?O and C-H?O hydrogen bonds, forming supra-molecular ribbons along the a axis.

| S-EPMC3120434 | biostudies-literature

(1-Hy-droxy-ethyl-idene)(meth-yl)aza-nium bromide-N-methyl-acetamide (1/1).

Project description:The asymmetric unit of the organic hybrid salt, C(3)H(8)NO(+)·Br(-)·C(3)H(7)NO, comprises an N-methyl-acetamide cation, a N-methyl-acetamide mol-ecule and a bromide anion. The amide species are linked head-to-head through a short O?H?O hydrogen bond, giving a monocation, which is extended by N-H?Br hydrogen bonds into chains along the b-axis direction.

| S-EPMC3344601 | biostudies-literature

Crystal structure of ethyl 4-[(E)-(4-hy-droxy-3-meth-oxy-benzyl-idene)amino]-benzoate: a p-hy-droxy Schiff base.

Project description:The title p-hy-droxy Schiff base, C17H17NO4, was synthesized via the condensation reaction of benzocaine with vanillin. The benzyl-idine and benzoate rings are inclined to one another by 24.58 (8)°, and the conformation about the C=N bond is E. In the crystal, mol-ecules are linked by O-H⋯N hydrogen bonds, forming zigzag chains propagating along [010]. Adjacent chains are linked by C-H⋯π and weak offset π-π inter-actions [inter-centroid distance = 3.819 (1) Å], forming sheets parallel to (10-2).

| S-EPMC4992913 | biostudies-literature

2-[(2-Hy-droxy-eth-yl)aza-nium-yl]ethanaminium oxalate monohydrate.

Project description:In the title hydrated mol-ecular salt, C(4)H(14)N(2)O(2+)·C(2)O(4) (2-)·H(2)O, the oxalate dianion is almost planar (r.m.s. deviation = 0.020?Å). In the crystal, the components are linked by N-H?O(water), N-H?O(oxalate) O-H(ammonium)?O(oxalate), O-H(water)?O(oxalate) and O-H(water)?O(ammonium) hydrogen bonds, thereby forming a complex three-dimensional packing motif.

| S-EPMC3275022 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data