Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Bis(4-amino-pyridinium) dichromate(VI).

ABSTRACT: The asymmetric unit of the title salt, (C5H7N2)2[Cr2O7], contains four independent cations and two independent dichromate anions. The crystal structure consists of discrete dichromate anions with an eclipsed conformation stacked in layers parallel to (010) at y = 1/4 and y = 3/4. These layers are linked via 4-amino-pyridinium cations by N-H?O and weak C-H?O hydrogen bonds, forming a three-dimensional supra-molecular network. In addition, ?-? inter-actions are present in this structure; the shortest distance separating mean planes through 4-amino-pyridinium cations is 3.679?(6)?Å.

SUBMITTER: Trabelsi S

PROVIDER: S-EPMC4120631 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

Bis(4-amino-pyridinium) dichromate(VI).

Trabelsi Sonia S Roisnel Thierry T Dhaouadi Hassouna H Marouani Houda H

Acta crystallographica. Section E, Structure reports online 20140614 Pt 7

The asymmetric unit of the title salt, (C5H7N2)2[Cr2O7], contains four independent cations and two independent dichromate anions. The crystal structure consists of discrete dichromate anions with an eclipsed conformation stacked in layers parallel to (010) at y = 1/4 and y = 3/4. These layers are linked via 4-amino-pyridinium cations by N-H⋯O and weak C-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular network. In addition, π-π inter-actions are present in this structure; the short ...[more]

PMID: 25161526

Similar Datasets

Bis(2-amino-3-nitro-pyridinium) dichromate(VI).

Project description:The title compound, (C(5)H(6)N(3)O(2))(2)[Cr(2)O(7)], consists of 2-amino-3-nitro-pyridinium cations and discrete dichromate anions linked together by N-H?O and C-H?O hydrogen bonds, forming thick layers parallel to (101). Layer cohesion is ensured by N-H?O hydrogen bonding in addition to electrostatic and van der Waals inter-actions, forming a three-dimensional framework. The dichromate anion is located on a twofold axis that passes through its bridging O atom.

| S-EPMC2968023 | biostudies-literature

Bis(benzyl-trimethyl-ammonium) dichromate(VI).

Project description:The asymmetric part of the title compound, (C(10)H(16)N)(2)[Cr(2)O(7)], contains one cation and a half of the dichromate dianion, which has a staggered conformation and exhibits disorder of the bridging O atom around the inversion center over two positions in a 1:1 ratio. Weak inter-molecular C-H⋯O hydrogen bonds link cations and anions into a three-dimensional structure.

| S-EPMC3246999 | biostudies-literature

Crystal structure of 1,4-bis-(3-ammonio-prop-yl)piperazine-1,4-diium bis-[dichromate(VI)].

Project description:The asymmetric unit of the organic-inorganic title salt, (C10H28N4)[Cr2O7]2, comprises one half of an 1,4-bis-(3-ammonio-prop-yl)piperazinediium cation (the other half being generated by the application of inversion symmetry) and a dichromate anion. The piperazine ring of the cation adopts a chair conformation, and the two CrO4 tetra-hedra of the anion are in an almost eclipsed conformation. In the crystal, the cations and anions form a layered arrangement parallel to (001). N-H⋯O hydrogen bonds between the cations and anions and additional C-H⋯O inter-actions lead to the formation of a three-dimensional network structure.

| S-EPMC4908532 | biostudies-literature

Diaqua-bis(1,10-phenanthroline)magnesium dichromate(VI) 1,10-phenanthroline disolvate.

Project description:In the title compound, [Mg(C(12)H(8)N(2))(2)(H(2)O)(2)][Cr(2)O(7)]·2C(12)H(8)N(2), the cation and anion are situated on a twofold rotation axis. The Mg(II) ion is coordinated by four N atoms from two 1,10-phenanthroline ligands and two O atoms from coordinated water mol-ecules in a distorted octa-hedral geometry. Inter-molecular O-H?N and O-H?O hydrogen bonds and ?-? inter-actions between the aromatic rings [shortest centroid-centroid separation = 3.527?(2)?Å] link the cations, anions and 1,10-phenanthroline solvent mol-ecules into a hydrogen-bonded cluster.

| S-EPMC2969879 | biostudies-other

Bis(pyridinium) trans-tetrachlorido-dioxidouranate(VI) dioxane solvate.

Project description:In the crystal structure of the title compound, (C(5)H(6)N)(2)[UCl(4)O(2)]·C(4)H(8)O(2), the pyridinium cations occupy general positions and the anions and the solvent dioxane mol-ecule are located on centres of inversion. The dioxane mol-ecules are connected to two symmetry-related pyridinium cations via O-H?O hydrogen bonding. There are additional inter-molecular C-H?Cl contacts, which are indicative of weak C-H?Cl inter-actions.

| S-EPMC2915159 | biostudies-literature

Tetra-pyridinium ?-oxido-di-?-sulfato-bis-[chloridodioxidomolybdate(VI)].

Project description:The title salt, (C(5)H(6)N)(4)[Mo(2)Cl(2)O(5)(SO(4))(2)], comprises four pyridinium cations for each [(MoClO(2))(2)(?-O)(?-SO(4))(2)](4-) anionic unit. The asymmetric unit consists of three aggregates of the empirical formula. The tetra-anionic bimetallic molybdenum(VI) cluster is unprecedented and contains two sulfate and one oxide bridges. This structure constitutes the first example of a non-polymeric compound with terminal oxide, sulfate and halide ligands bonded to the same metal. The hydrogen bonds connecting the pyridinium cations to the molybdenum clusters are diverse, varying from strong and directional interactions to bifurcated bonds with a subsequent loss of directionality.

| S-EPMC3007277 | biostudies-literature

Propane-1,3-diammonium dichromate(VI).

Project description:The title compound, (C(3)H(12)N(2))[Cr(2)O(7)], consists of a discrete dichromate anion with an eclipsed conformation and a propane-1,3-diammonium cation. Both kinds of ions have a mirror plane passing through the bridging O atom and the central methyl-ene C atom of the Cr(2)O(7) (2-) and C(3)H(12)N(2) (2+) moieties, respectively. Anions and cations are alternately stacked to form columns parallel to the b axis. Ions are linked by intra- and inter-column hydrogen bonds of types N-H?O and C-H?O, involving O atoms of the dichromate anions as acceptors, and ammonium or methyl-ene groups as donors.

| S-EPMC3414122 | biostudies-literature

Bis(4-amino-pyridinium) bis(hydrogen oxalate) monohydrate.

Project description:In the title compound, 2C(5)H(7)N(2) (+)·2C(2)HO(4) (-)·H(2)O, the asymmetric unit consists of an amino-pyridinium cation, an oxalic actetate anion and a half-molecule of water, which lies on a two-fold rotation axis. The crystal packing is consolidated by inter-molecular O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds. The mol-ecules are linked into an infinite one dimensional chain along [010].

| S-EPMC2968938 | biostudies-literature

Bis(4-amino-pyridinium) sulfate monohydrate.

Project description:The asymmetric unit of the title compound, 2C(5)H(7)N(2) (+)·SO(4) (2-)·H(2)O, contains two 4-amino-pyridinium cations (A and B), a sulfate dianion and a water mol-ecule. One of the 4-amino-pyridinium cations (B) is disordered over two orientations with refined site occupancies of 0.568 (4) and 0.432 (4). The non-H atoms of the 4-amino-pyridinium cations are essentially coplanar, with a maximum deviation of 0.055 (1) Å (in cation A), 0.022 (3) Å (for the major component in cation B) and 0.009 (3) Å (for the minor component in cation B). In the crystal, the sulfate O atoms link the 4-amino-pyridinium cations and water mol-ecules into a three-dimensional network via inter-molecular O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds. The crystal structure is further consolidated by N-H⋯O(water) and C-H⋯O(water) hydrogen bonds.

| S-EPMC3007857 | biostudies-literature

Bis[4-(dimethyl-amino)-pyridinium] tetra-chloridozincate.

Project description:In the title compound, (C(7)H(11)N(2))(2)[ZnCl(4)], [ZnCl(4)](2-) anions and 4-(dimethyl-amino)-pyridinium cations are held together by various inter-molecular inter-actions including Coulombic attraction, hydrogen bonding and π-π stacking inter-actions. Three Cl atoms of the [ZnCl(4)](2-) tetra-hedron act as acceptors in N-H⋯Cl hydrogen bonds. The hydrogen bonds, both of which are bifurcated, lead to the formation of a three-dimensional network. Within the network, inter-molecular π-π stacking inter-actions with a centroid-centroid distance of 3.5911 (7) Å arrange the 4-(dimethyl-amino)-pyridinium cations into anti-parallel dimers.

| S-EPMC3052076 | 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