Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

N,N'-Bis[(E)-quinoxalin-2-ylmethyl-idene]-ethane-1,2-diamine.

ABSTRACT: In the mol-ecule of the title compound, C(20)H(16)N(6), the central C-C bond lies on a crystallographic inversion centre. The quinoxalidine ring is nearly planar, with a maximum deviation of 0.021?(2)?Å from the mean plane. The crystal structure is stabilized by inter-molecular C-H?N inter-actions, leading to the formation of a layer-like structure, which extends along the a axis.

SUBMITTER: Varghese D

PROVIDER: S-EPMC2968406 | biostudies-literature | 2009 Jan

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

N,N'-Bis[(E)-quinoxalin-2-ylmethyl-idene]-ethane-1,2-diamine.

Varghese Digna D Arun V V Sebastian Manju M Leeju P P Varsha G G Yusuff K K M KK

Acta crystallographica. Section E, Structure reports online 20090131 Pt 2

In the mol-ecule of the title compound, C(20)H(16)N(6), the central C-C bond lies on a crystallographic inversion centre. The quinoxalidine ring is nearly planar, with a maximum deviation of 0.021 (2) Å from the mean plane. The crystal structure is stabilized by inter-molecular C-H⋯N inter-actions, leading to the formation of a layer-like structure, which extends along the a axis. ...[more]

PMID: 21582020

Similar Datasets

N,N'-Bis(3-methoxy-benzyl-idene)ethane-1,2-diamine.

Project description:The mol-ecule of the title bidentate Schiff base ligand, C(18)H(20)N(2)O(2), has twofold crystallographic rotation symmetry, giving one half-mol-ecule per asymmetric unit. It adopts a twisted E configuration with respect to the azomethine C=N bond. The imino group is coplanar with the aromatic ring. The dihedral angle between the two benzene rings is 69.52?(5)°. The meth-oxy group is coplanar with the benzene ring, as indicated by the C-O-C-C torsion angle of -179.56?(8)°. In the unit cell, mol-ecules are linked together by inter-molecular C-H?O hydrogen bonds, forming chains along the a axis; these chains are further stacked down the b axis by both inter-molecular C-H?O and C-H?? inter-actions.

| S-EPMC2960703 | biostudies-literature

N,N'-Bis(2-iodo-benzyl-idene)ethane-1,2-diamine.

Project description:The mol-ecule of the title Schiff base compound, C(16)H(14)I(2)N(2), lies across a crystallographic inversion centre. An intra-molecular C-H?I hydrogen bond forms a five-membered ring, producing an S(5) ring motif. The C=N bond is coplanar with the benzene ring and adopts a trans configuration. Within the mol-ecule, the planar units are parallel, but extend in opposite directions from the dimethyl-ene bridge. An inter-esting feature of the crystal structure is the short I?N [3.2096?(15)?Å] inter-action, which is significantly shorter than the sum of the van der Waals radii of these atoms. In the crystal structure, mol-ecules are linked into one-dimensional extended chains along the c axis and also into one-dimensional extended chains along the b axis through short inter-molecular I?N inter-actions, forming two-dimensional networks parallel to the bc plane.

| S-EPMC2959359 | biostudies-literature

N,N'-Bis(3,5-dichloro-benzyl-idene)-ethane-1,2-diamine.

Project description:The mol-ecule of the title Schiff base compound, C(16)H(12)Cl(4)N(2), lies across an inversion centre and adopts an E configuration with respect to the azomethine C=N bond. The imine groups are coplanar with the aromatic rings. Within the mol-ecule, the planar units are parallel but extend in opposite directions from the dimethyl-ene bridge. In the crystal structure, mol-ecules are linked together by inter-molecular C-H⋯Cl hydrogen bonds along the a axis.

| S-EPMC2959545 | biostudies-literature

N,N'-Bis(4-bromo-benzyl-idene)ethane-1,2-diamine.

Project description:The mol-ecule of the title Schiff base compound, C(16)H(14)Br(2)N(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. The crystal structure is stabilized by inter-molecular C-H⋯π inter-actions and Br⋯Br [3.6307 (4) Å] short contacts.

| S-EPMC2962009 | biostudies-literature

N,N'-Bis(3-bromo-benzyl-idene)ethane-1,2-diamine.

Project description:The mol-ecule of the title Schiff base compound, C(16)H(14)Br(2)N(2), lies across a crystallographic inversion centre. The C=N bond adopts a trans configuration. The imino group is coplanar with the benzene ring. Within the mol-ecule, the planar units are parallel, but extend in opposite directions from the dimethyl-ene bridge. The inter-esting feature of the structure is the weak Br⋯Br inter-action [3.7501 (2) Å] linking the mol-ecules into chains along the c axis. These chains are stacked along the b axis.

| S-EPMC2962103 | biostudies-literature

N,N'-Bis[(E)-2,4,6-trimethyl-benzyl-idene]ethane-1,2-diamine.

Project description:The title compound, C(22)H(28)N(2), which is a double imine derived from ethane-1,2-diamine and mesityl aldehyde, has crystallographic inversion symmetry, with both C=N bonds E configured. The dihedral angle between the mesityl ring system and the imide functional group is 23.89?(17)°.

| S-EPMC3213609 | biostudies-literature

N,N'-Bis(2,3-dimeth-oxy-benzyl-idene)ethane-1,2-diamine.

Project description:The title compound, C(20)H(24)N(2)O(4), crystallizes with two half (centrosymmetric) mol-ecules in the asymmetric unit. There are only minor differences between the geometric parameters between these two mol-ecules. The two aromatic rings in both mol-ecules are mutually coplanar.

| S-EPMC3200920 | biostudies-literature

N,N'-Bis(4-bromo-2-fluoro-benzyl-idene)ethane-1,2-diamine.

Project description:The mol-ecule of the title Schiff base compound, C(16)H(12)Br(2)F(2)N(2), lies across a crystallographic inversion centre and adopts an E configuration with respect to the azomethine C=N bonds. The imino groups are coplanar with the aromatic rings. Within the mol-ecule, the planar units are parallel, but extend in opposite directions from the dimethyl-ene bridge. An inter-esting feature of the crystal structure is the short inter-molecular Br?F inter-actions [3.2347?(16)?Å, which is shorter than the sum of the van der Waals radii of these atoms]. These inter-actions link neighbouring mol-ecules along the c axis. The crystal structure is further stabilized by inter-molecular C-H?N hydrogen bonds.

| S-EPMC2959256 | biostudies-literature

N,N'-Bis(3-chloro-2-fluoro-benzyl-idene)ethane-1,2-diamine.

Project description:The mol-ecule of the title centrosymmetric Schiff base compound, C(16)H(12)Cl(2)F(2)N(2), adopts an E configuration with respect to the azomethine C=N bond. The imino groups are coplanar with the aromatic rings. Within the mol-ecule, the planar units are parallel, but extend in opposite directions from the dimethyl-ene bridge. An inter-esting feature of the crystal structure is the short inter-molecular Cl?F [3.1747?(5)?Å] inter-actions, which are shorter than the sum of the van der Waals radii of these atoms. These inter-actions link neighbouring mol-ecules along the b axis. The crystal structure is further stabilized by ?-? inter-actions, with a centroid-centroid distance of 3.5244?(4)?Å.

| S-EPMC2959267 | biostudies-literature

(E,E)-N,N-Bis(2,6-difluoro-benzyl-idene)ethane-1,2-diamine.

Project description:The asymmetric unit of the title compound, C(16)H(12)F(4)N(2), comprises half of the potentially bidentate Schiff base ligand, with an inversion centre located at the mid-point of the central C-C bond. The crystal packing is stabilized by inter-molecular C-H?N and ?-? inter-actions [centroid-centroid distance = 3.6793?(12)?Å and inter-planar spacing = 3.4999?(7)?Å].

| S-EPMC3247492 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

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