Browse
Submit Data
Databases
API
Help

Dataset Information

24 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

5-Bromo-N-phenyl-pyrazine-2,3-diamine.

ABSTRACT: In the title compound, C(10)H(9)BrN(4), the dihedral angle between the benzene and pyrazine rings is 61.34?(5)°. Inter-molecular N-H?N hydrogen bonds and N-H?? inter-actions assemble the mol-ecules into a three-dimensional network structure.

SUBMITTER: Zhu X

PROVIDER: S-EPMC2977195 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

5-Bromo-N-phenyl-pyrazine-2,3-diamine.

Zhu Xiaohui X

Acta crystallographica. Section E, Structure reports online 20090725 Pt 8

In the title compound, C(10)H(9)BrN(4), the dihedral angle between the benzene and pyrazine rings is 61.34 (5)°. Inter-molecular N-H⋯N hydrogen bonds and N-H⋯π inter-actions assemble the mol-ecules into a three-dimensional network structure. ...[more]

PMID: 21583644

Similar Datasets

Crystal structures of 2,3-bis-(thio-phen-2-yl)pyrido[2,3-b]pyrazine and 7-bromo-2,3-bis-(thio-phen-2-yl)pyrido[2,3-b]pyrazine.

Project description:The crystal structures of 2,3-bis-(thio-phen-2-yl)pyrido[2,3-b]pyrazine, C15H9N3S2 (1), and 7-bromo-2,3-bis-(thio-phen-2-yl)pyrido[2,3-b]pyrazine, C15H8BrN3S2 (2), are discussed. Both mol-ecules crystallize in space group P21/c. In 1, the thienyl rings are inclined to the mean plane of the pyrido-pyrazine moiety by 6.16?(7) and 86.66?(8)°, where as in 2 the corresponding dihedral angles are 33.29?(11) and 19.84?(9)°. The pyrido-pyrazine moiety is relatively planar in 1 with the two rings being inclined to each other by 1.33?(7)°. In 2, however, the pyrido-pyrazine moiety is buckled with the corresponding dihedral angle being larger at 8.78?(10)°. In the crystal of 1, the packing creates inter-secting bilayers; the layering results from the pyrido-pyrazine moieties being engaged in offset ?-stacking, where the inter-planar distance is 3.431?(9)?Å with an offset 1.14?Å. In the crystal of 2, the mol-ecules pack head-to-head and are linked by a series of C-H?Br and C-H?N inter-molecular inter-actions, forming layers parallel to the ab plane.

| S-EPMC6323875 | biostudies-other

4,6-Di-bromo-N-{3-[(4,6-di-bromo-2,3-di-methyl-phenyl)imino]butan-2-yl-idene}-2,3-di-methyl-aniline.

Project description:The title compound, C20H20Br4N2, is a product of the condensation reaction of 4,6-di-bromo-2,3-di-methyl-aniline and butane-2,3-dione. The mol-ecule has a center of symmetry at the mid-point of the central C-C bond. The dihedral angle between the benzene ring and the 1,4-di-aza-butadiene plane is 78.3?(2)°. Niether hydrogen bonding nor aromatic stacking is observed in the crystal structure.

| S-EPMC3790371 | biostudies-literature

Pyridine-2,3-diamine.

Project description:The mol-ecule of the title pyridine derivative, C(5)H(7)N(3), shows approximately non-crystallographic C(s) symmetry. Intra-cyclic angles cover the range 117.50?(14)-123.03?(15)°. In the crystal, N-H?N hydrogen bonds connect mol-ecules into a three-dimensional network. The closest inter-centroid distance between two ?-systems occurs with the c-axis repeat at 3.9064?(12)?Å.

| S-EPMC3213591 | biostudies-literature

5,6-Dimethyl-pyrazine-2,3-dicarbonitrile.

Project description:The asymmetric unit of the title compound, C(8)H(6)N(4), contains two almost planar independent mol-ecules (r.m.s. deviations = 0.026 and 0.030?Å). The crystal studied was a non-merohedral twin with the components in a 0.513?(2):0.487?(2) ratio.

| S-EPMC3515305 | biostudies-literature

5,6-Diphenyl-pyrazine-2,3-dicarbonitrile.

Project description:In the title compound, C(18)H(10)N(4), the pyrazine ring is oriented at dihedral angles of 48.08?(7) and 44.80?(7)° with respect to the phenyl rings, while the dihedral angle between the phenyl rings is 49.47?(7)°. In the crystal structure, weak ?-? contacts between pyrazine and phenyl rings [centroid-centroid distance = 3.813?(1)?Å] may stabilize the structure.

| S-EPMC2970004 | biostudies-literature

Bis(triethyl-ammonium) bis-(μ-pyrazine-2,3-dithiol-ato)bis-(pyrazine-2,3-dithio-lato)diferrate(III) methanol disolvate.

Project description:In the title compound, (C(6)H(16)N)(2)[Fe(2)(C(4)H(2)N(2)S(2))(4)]·2CH(4)O, the [Fe(III)(pdt)(2)](-) anion (pdt is pyrazine-2,3-dithiol-ate) forms a centrosymmetric dimer supported by two Fe(III)-S bonds [Fe-S = 2.4787 (4) Å]. In the crystal structure, dimers form a one-dimensional stack along the b axis via π-π stacking inter-actions, the inter-planar separation between adjacent dimers being 3.51 (2) Å. The methanol solvent mol-ecule is involved in two hydrogen bonds in which the hydroxyl group acts as a hydrogen-bond donor to the N atom of a pdt ligand and the O atom acts as an acceptor for the NH group of the triethyl-ammonium cation.

| S-EPMC2967914 | biostudies-literature

Bis(2,3-dimethyl-butane-2,3-diamine)nickel(II) dinitrate monohydrate.

Project description:In the title compound, [Ni(C(6)H(16)N(2))(2)](NO(3))(2)·H(2)O, the bis-(2,3-dimethyl-butane-2,3-diamine)nickel(II) complex cation possesses a relatively undistorted square-planar geometry about the Ni atom, which lies on an inversion centre and is coordinated by four N atoms from two symmetry-related 2,3-diamino-2,3-dimethyl-butane (tmen) ligands. The amine groups are N-H?O hydrogen bonded to the nitrate anions, which are, in turn, linked by inter-stitial water mol-ecules lying on a twofold axis. The infinite zigzag chains thus formed along [001] are further connected to each other by N-H?O hydrogen bonds towards the water mol-ecules, forming layers of two-dimensional hydrogen-bonded arrays.

| S-EPMC2977546 | biostudies-literature

2,3-Bis(thio-phen-2-yl)pyrazine-[2,3-f][1,10]phenanthroline.

Project description:The mol-ecule of the title compound, C(22)H(12)N(4)S(2), shows no crystallographic symmetry. The thiophene rings form different dihedral angles [40.15?(9) and 15.43?(10)°] with the pyrazine ring. A strong ?-? stacking inter-action occurs between adjacent pyrazine-[2,3-f][1,10]phenanthroline units with an inter-planar distance of 3.4352?(16)?Å.

| S-EPMC3344560 | biostudies-literature

5,6-Di-2-thienyl-2,3-dihydro-pyrazine.

Project description:In the title compound, C(12)H(10)N(2)S(2), which was synthesized by the reaction of 2,2'-thenil and ethyl-enediamine, the dihedral angle between the two thio-phene rings is 66.33?(9)°. In the crystal structure, inter-molecular C-H?N hydrogen bonds link the mol-ecules into infinite chains along the b axis and weak C-H?? inter-actions may further stabilize the structure.

| S-EPMC2979149 | biostudies-literature

2-Methyl-3,5,6-triphenyl-2,3-dihydro-pyrazine.

Project description:In the title mol-ecule, C(23)H(20)N(2), the heterocyclic ring adopts a screw-boat conformation, with all substituents equatorial. The phenyl ring at position 3 makes dihedral angles of 78.12?(15) and 72.67?(15)°, respectively, with the phenyl rings at positions 5 and 6; the dihedral angle between the phenyl rings at positions 5 and 6 is 67.32?(14)°. A C-H?? inter-action is present in the crystal structure.

| S-EPMC2968533 | 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