Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Tetra-kis(pyridazine-?N)bis-(seleno-cyanato-?N)nickel(II) pyridazine disolvate.

ABSTRACT: The reaction of nickel(II) nitrate with potassium seleno-cyanate and pyridazine leads to crystals of the title compound, [Ni(NCSe)(2)(C(4)H(4)N(2))(4)]·2C(4)H(4)N(2). The Ni(II) atom is coordinated by two terminal N-bonded seleno-cyanate anions and four pyridazine ligands within a slightly distorted octa-hedral geometry. The crystal structure contains two crystallographically independent pyridazine molecules in cavities of the structure, which are not coordinated to the metal centres. The structure is pseudo-C-centered due to the positioning of the discrete coordination complexes; the non-coordinating pyridazine molecules, however, break the C-centering. In the subcell, these ligands are disordered around centres of inversion, which do not coincide with the mid-point of the mol-ecules.

SUBMITTER: Wohlert S

PROVIDER: S-EPMC3393220 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

Tetra-kis(pyridazine-κN)bis-(seleno-cyanato-κN)nickel(II) pyridazine disolvate.

Wöhlert Susanne S Wriedt Mario M Jess Inke I Näther Christian C

Acta crystallographica. Section E, Structure reports online 20120623 Pt 7

The reaction of nickel(II) nitrate with potassium seleno-cyanate and pyridazine leads to crystals of the title compound, [Ni(NCSe)(2)(C(4)H(4)N(2))(4)]·2C(4)H(4)N(2). The Ni(II) atom is coordinated by two terminal N-bonded seleno-cyanate anions and four pyridazine ligands within a slightly distorted octa-hedral geometry. The crystal structure contains two crystallographically independent pyridazine molecules in cavities of the structure, which are not coordinated to the metal centres. The struct ...[more]

PMID: 22807788

Similar Datasets

Tetra-kis(pyridazine-?N)bis-(seleno-cyanato-?N)cobalt(II) pyridazine disolvate.

Project description:Reaction of cobalt(II) nitrate with potassium seleno-cyanate and pyridazine leads to single crystals of the title compound, [Co(NCSe)(2)(C(4)H(4)N(2))(4)]·2C(4)H(4)N(2), which is isotypic with its nickel(II) thio-cyanate analogue. The Co(2+) cations are coordinated by two N-bonded seleno-cyanate ligands and four N atoms from four pyridazine ligands into discrete complexes. The complexes are arranged into layers parallel to (001). These layers are separated by additional non-coordinating pyridazine ligands.

| S-EPMC3393216 | biostudies-literature

Tetra-kis(pyridazine-?N)bis-(thio-cyanato-?N)nickel(II) pyridazine disolvate.

Project description:The reaction of nickel(II) thio-cyanate with an excess of pyridazine leads to single crystals of the title compound, [Ni(NCS)(2)(C(4)H(4)N(2))(4)]·2C(4)H(4)N(2). The Ni(II) cations are coordinated by two terminal N-bonded thio-cyanate anions (trans) and four pyridazine ligands in a slightly distorted octa-hedral geometry. The discrete complexes are arranged into layers parallel to the ab plane which are separated by additional non-coordinated pyridazine ligands.

| S-EPMC3379122 | biostudies-literature

Bis(dicyanamido-?N)tetra-kis-(pyridazine-?N)nickel(II).

Project description:Reaction of nickel(II) chloride with sodium dicyanamide and pyridazine leads to single crystals of the title compound, [Ni{N(CN)(2)}(2)(C(4)H(4)N(2))(4)], in which the Ni(II) cation is octa-hedrally coordinated by two dicyanamide anions and four pyridazine ligands into a discrete complex that is located on a center of inversion.

| S-EPMC3344413 | biostudies-literature

Bis(pyridazine-?N)bis-(seleno-cyanato-?N)zinc.

Project description:The asymmetric unit of the title compound, [Zn(NCSe)(2)(C(4)H(4)N(2))(2)], consists of one Zn(II) cation, located on a twofold rotation axis, one seleno-cyanate anion and one pyridazine ligand in general positions. The Zn(II) atom is coordinated by two N-atoms of two pyridazine ligands and two terminal N-bonded seleno-cyanate anions within a slightly distorted tetra-hedral coordination environment. In the crystal, discrete complex mol-ecules are arranged in layers parallel to the ac plane, with Zn(II)?Zn(II) distances of 8.0906?(6)?Å along the a axis and of 9.0490?(7) or 9.3604?(7)?Å along the c axis. The complex mol-ecules are further linked via weak Se?Se inter-actions, with Se?Se distances of 3.8235?(9)?Å.

| S-EPMC3089317 | biostudies-literature

Bis(cyanato-?N)tetra-kis-(2,6-dimethyl-pyrazine-?N(4))nickel(II).

Project description:Reaction of nickel(II) chloride with sodium cyanate and 2,6-di-methyl-pyrazine leads to single crystals of the title com-pound, [Ni(NCO)(2)(C(6)H(8)N(2))(4)]. The nickel(II) cation is located about a centre of inversion and is octa-hedrally coordinated by two cyanate anions and four 2,6-dimethyl-pyrazine ligands, forming discrete complexes.

| S-EPMC3393221 | biostudies-literature

Poly[tetra-kis-(seleno-cyanato-κN)bis-(methanol-κO)tris-(μ-pyrimidine-κN:N')dicobalt(II)].

Project description:In the title compound, [Co(2)(NCSe)(4)(C(4)H(4)N(2))(3)(CH(3)OH)(2)](n), the Co(II) ion is coordinated by three N-bonded pyrimidine ligands, two N-bonded seleno-cyanate anions and one O-bonded methanol mol-ecule in an octa-hedral coordination mode. The asymmetric unit consists of one Co(II) ion, one pyrimidine ligand, two seleno-cyanate anions and one methanol mol-ecule in general positions as well as one pyrimidine ligand located around a twofold rotation axis. In the crystal structure, the pyrimidine ligands bridge [Co(CNSe)(2)(CH(3)OH)] units into zigzag-like chains, which are further connected by pyrimidine ligands into layers parallel to (010).

| S-EPMC3007058 | biostudies-literature

Tetra-kis(3-cyano-pyridine-κN)bis-(thio-cyanato-κN)cobalt(II) 1,4-dioxane disolvate.

Project description:In the crystal structure of the title compound, {[Co(NCS)(2)(C(6)H(4)N(2))(4)]·2C(4)H(8)O(2)}, the Co(II) cations are octa-hedrally coordinated by two terminal N-bonded thio-cyanate anions and four N-bonded 3-cyano-pyridine ligands. The asymmetric unit consists of one Co(II) cation, which is located on a special position with site symmetry 2/m, one thio-cyanate anion and one dioxane mol-ecule, located on a crystallographic mirror plane, as well as one 3-cyano-pyridine ligand in a general position. The crystal structure consists of discrete complexes of [Co(NCS)(2)(3-cyano-pyridine)(4)], as well as two non-coordinating 1,4-dioxane solvent mol-ecules which are disordered due to symmetry.

| S-EPMC3238779 | biostudies-literature

Synthesis, crystal structure and properties of bis-(iso-seleno-cyanato-κ<i>N</i>)tetra-kis-(pyridine-κ<i>N</i>)nickel(II).

Project description:The reaction of nickel chloride hexa-hydrate with potassium seleno-cyanate and pyridine in water leads to the formation of crystals of the title complex, [Ni(NCSe)2(C5H5N)4], which were characterized by single-crystal X-ray diffraction. Its crystal structure consists of discrete complexes, located on centers of inversion, in which the Ni cations are sixfold coordinated by two terminal N-bonded seleno-cyanate anions and four pyridine ligands within a slightly distorted octa-hedral coordination. In the crystal, the complexes are connected by weak C-H⋯Se inter-actions. PXRD investigations revealed that a pure crystalline phase has formed. In the IR and Raman spectra, the C-N stretching vibrations are observed at 2083 and 2079 cm-1, respectively, in agreement with the presence of only terminally bonded anionic ligands. Upon heating, one well-resolved mass loss is observed, in which two of the four pyridine ligands are removed, leading to a compound with the composition Ni(NCSe)2(C5H5N)2. In this compound, the C-N stretching vibration is shifted to 2108 cm-1 (Raman) and 2115 cm-1 (IR), indicating the presence of μ-1,3-bridging anionic ligands. In its PXRD pattern, very broad reflections are observed, indicating for poor crystallinity and/or very small particle size. This crystalline phase is not isotypic to its Co and Fe analogs.

| S-EPMC9912460 | biostudies-literature

trans-Tetra-kis(1-allyl-1H-imidazole-κN)bis-(thio-cyanato-κN)nickel(II).

Project description:The structure of the title compound, [Ni(NCS)(2)(C(6)H(8)N(2))(4)], consists of isolated mol-ecules of [Ni(NCS)(2)(Aim)(4)] (Aim = 1-allyl-imidazole), which contain a distorted octa-hedral NiN(6) chromophore. The NCS(-) anions are trans and four N atoms from the 1-allyl-imidazole ligands define the equatorial plane. The mean Mn-N(Aim) and Mn-N(NCS) distances are 2.105 (2) and 2.098 (2) Å, respectively. Weak C-H⋯N inter-actions contribute to the crystal packing stability.

| S-EPMC3274912 | biostudies-literature

Poly[[tetra-kis-(μ-1,2-di-4-pyridyl-ethyl-ene-κN:N')tetra-kis-(seleno-cyanato-κN)dimanganese(II)] 1,2-di-4-pyridyl-ethyl-ene disolvate].

Project description:The crystal structure of the title compound, {[Mn(NCSe)(2)(C(12)H(10)N(2))(2)]·C(12)H(10)N(2)}(2n), consists of two crystallographically independent Mn cations, four seleno-cyanate anions, four 1,2-di-pyridylethylene (bpe) ligands (two of which are located on centers of inversion) and two bpe solvent molecules. Each manganese(II) cation is coordinated by two terminally N-bonded seleno-cyanate anions and four bpe ligands within a slightly distorted octa-hedron. The manganese(II) cations are linked by the bpe ligands into chains that are further connected by these ligands into layers. These layers are stacked, forming cavities in which additional bpe solvent molecules are embedded.

| S-EPMC3120600 | 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