Reaction Of Nickel Research Articles

Friction and Wear Properties of α-Al<sub>2</sub>O<sub>3</sub>-Coated SiC Particle Reinforced Nickel Matrix Composites Sliding against Bearing Steel

In this study, attempt has been made to investigate the effect of SiC particles on the friction and wear properties of Ni/SiC composites manufactured by electrodeposition, especially for the composites with high-temperature treatment.For this purpose, α-Al2O3 was coated on the surfaces of SiC particles by sol-gel technology to inhibit interfacial reaction of SiC and nickel at high temperature. Both of the Ni/α-Al2O3-coated SiC (Ni/CSp) and Ni/uncoated SiC (Ni/UCSp) composites were treated at 600 °C to study the resulting wear behaviour. The results indicated that with heat treatment at 600 °C, the Ni/CSp composite had better tribological properties than the Ni/UCSp composite. It was proved that the uncoated SiC particles have reacted completely with nickel leaving many defects, while the coated SiC particles still remained in the Ni/CSp composite hardening the nickel matrix and supporting the counterpart, thus improving the wear resistance of Ni/CSp composite with relatively low friction coefficient and wear mass loss compared to the Ni/UCSp composite.

THERMAL DECOMPOSITION OF UROTROPINE COMPLEXES WITH NICKEL AND COBALT CHLORIDES

Complex compounds NiCl2·2HMTA·10H2O (1), CoCl2·2HMTA·10H2O (2), CoCl2·HMTA·4.5H2O (3) were prepared by the reaction of nickel(II) and cobalt(II) chlorides with urotropine (HMTA). Compounds 1 and 2 are isostructural, their structure corresponds to the earlier studied crystal structure [Ni(H2O)6]Cl2·4H2O·2HMTA. Thermal destruction of the complex compounds 1-3 was studied by TGA and high-temperature IR-spectroscopy. The TGA curve for compound 1 shows stepwise mass loss caused by two-stage loss of all water molecules (up to 170°C) and one urotropine molecule (up to 270°C) followed by decomposition of NiCl2·HMTA. The X-ray diffraction pattern of the resulting solid shows no reflections typical for the metal and its simplest nitrogen-, carbon- and chlorine-containing compounds. Thermal decomposition of сompounds 2 and 3 proceed similarly, but water is removed in one stage. IR spectra, which were recorded at high temperature (up to 220-230°C) show gradual decrease of intensity of the bands assigned to vibrations of water molecules. The bands of the methylene groups of urotropine do not change on heating. However, the bands of the C-N vibrations shift from ~1050 and ~1008 cm-1 in the spectra of urotropine and [M(H2O)6](HMTA)2Cl2·4H2O to 1015-1019 and 984-995 cm-1, respectively, indicating coordination of urotropine molecules instead of the removed water molecules. The long-wave IR spectra for NiCl2·6H2O and compound 1 at ambient temperature show bands of Ni-O stretching vibrations and O-Ni-O bending vibrations. After heating 1 at 115° C, bands of Ni-N and Ni-Cl appear, which indicates the coordination of urotropine molecules and chloride ions after the removal of outer-sphere and inner-sphere water molecules.

Base-Promoted Synthesis of β-Substituted-Tryptophans via a Simple and Convenient Three-Component Condensation of Nickel(II) Glycinate.

A three-component reaction of nickel(II) glycinate was conducted for the convenient synthesis of β-substituted-tryptophans. The reaction worked smoothly under mild conditions and the procedure was simple and easy to handle.

Reactions of copper(II), nickel(II), and zinc(II) acetates with a new water-soluble 4-phenylthiosemicarbazone Schiff base ligand: Synthesis, characterization, unexpected cyclization, antimicrobial, antioxidant, and anticancer activities

A new Schiff base thiosemicarbazone ligand with aqueous solubility, namely, sodium 3-{[(anilinocarbonothioyl)hydrazono]methyl}-4-hydroxy benzene sulfonate (NaH2L) was synthesized by condensation of 4-phenylthiosemicarbazide and sodium salicylaldehyde-5-sulfonate (NaSalSO3) and characterized by elemental analysis, spectroscopic methods (UV–Vis, 1H NMR, FTIR) and electrospray ionization mass spectrometry. A co-crystal (Na(H2L)·Na(SalSO3)) of NaH2L and NaSalSO3 was prepared which confirmed the expected structure of the ligand. Reactions of NaH2L·0.5H2O with copper(II), nickel(II), and zinc(II) acetates were investigated under reflux conditions in methanol to produce following complexes [Cu2(Lcycl)2(H2O)2]·2H2O (CuLcycl), Ni(HL)(H2O)3 (NiL), and Zn(HL)(H2O)3 (ZnL). In the copper case, dinuclear copper complex [Cu2(Lcycl)2(H2O)2]·2H2O (where HLcycl− represents incorporating of 1,3-benzothiazole ligand, formed by in situ cyclization of H2L−) was isolated. In the dimer structure copper atoms adopt a five-coordinate near square pyramidal geometry. Two oxygens derived from two sulfonate groups occupy the apical positions on both the metal centers and bridge them. The compounds have remarkable solubility in water at 25°C: 50, 10, 50, and 50g/L for NaH2L·0.5H2O, CuLcycl, NiL, and ZnL, respectively. The stability of the compounds was checked in acidic, neutral, and basic aqueous solutions. Antimicrobial activity results indicated CuLcycl and NiL possess activity against gram-positive bacteria and fungus while the free ligand and ZnL are inactive. Antioxidant activity of the compounds was evaluated and the ligand indicated the strongest radical scavenging relative to the complexes and l-ascorbic acid as a water-soluble standard. It was observed that copper and nickel complexes decreased the viability of the human chronic myeloid leukemia K562 cells in a dose- and time-dependent manner and the ligand and zinc complex were not active. The IC50 values were 31±2.5 and 6±1.0μg/mL (72h) for copper and nickel complexes, respectively. Morphological and DNA fragmentation assay studies clearly indicated that the nickel complex as the strongest compound induce apoptosis in the K562 cell line.

Synthesis, characterization and crystal structures of Ni(II) and Cu(I) complexes with the condensation product of 2-(diphenylphosphino)benzaldehyde and 1-hydrazinophthalazine

A square-pyramidal Ni(II) complex (1) with the composition [NiL(HL′)]ClO4·H2O was synthesized in the reaction of nickel(II) perchlorate and 2-[2-(diphenylphosphino)benzylidene]-1-phthalazinylhydrazone (HL). The coordination surrounding the Ni(II) ion consist of a PNN coordinated deprotonated HL ligand and its corresponding oxidation product – phosphine oxide HL′ – coordinated via two nitrogen atoms of the hydrazinophthalazine moiety. The structure of Ni(II) complex 1 was determined by X-ray analysis, IR spectroscopy, elemental analysis and magnetic measurements. In the reaction of copper(II) perchlorate with HL, a binuclear phthalazine bridged Cu(I) complex (2) was obtained with the composition [Cu2(HL)2](ClO4)2·C2H5OH. The structure of Cu(I) complex 2 was determined by X-ray analysis, IR and NMR spectroscopy, elemental analysis and magnetic measurements.

Microgravimetric method for the determination of metformin in pharmaceutical preparations and in the bulk drug

This article reports a microgravimetric method for the quantitative determination of metformin in bulk and in pharmaceutical preparations. The analysis is simple and relatively rapid. A complete analysis can be performed in only an hour and thirty minutes due to the drying procedure of the precipitate. However a sample can be treated every each five minutes. The method is based on the reaction of nickel (II) with metformin that in basic medium forms an orange precipitate. The reaction is performed in a plastic syringe. The filtration was done in a glass tube containing a sintered glass disk or in Millipore® syringe filters, with posterior weighing after drying. The analytical results were statistically compared with that obtained with a HPLC and with the titrimetric method suggested by the United States and by the Japanese pharmacopoeias.

Microemulsion-mediated synthesis, characterization and optical properties of spherical nickel tungstate nanocrystals

Nickel tungstate (NiWO4) nanocrystals with wolframite structure were prepared in the presence of microemulsion systems including a cationic cetyltrimethylammonium bromide (CTAB) or nonionic polyethyleneglycol (PEG) surfactant. The water pools formed in the microemulsion system acted as nanoscale reactors for the reaction of nickel and tungstate ions to produce nickel tungstate nanocrystals. X-ray diffraction analysis revealed the formation of monoclinic phase after the heat treatment of the as-prepared materials. Elemental compositions and morphological structures were studied by energy dispersive X-ray analysis (EDX) and scanning electron microscopy (SEM). SEM analysis showed the spherical morphology of NiWO4. The average crystallite sizes of NiWO4 were about 38 and 26 nm in the presence of PEG and CTAB surfactants, respectively. The study of UV–Vis absorption spectrum showed the presence of direct band gap in the NiWO4 nanomaterial, found to be 2.7 and 2.6 eV in the presence of PEG and CTAB surfactants, respectively. A reasonable crystal growth mechanism has also been proposed.

Nickel(II) pyridinecarboxamide complexes: Solvothermal synthesis, crystal structures and magnetic properties

Three new mononuclear complexes of nickel(II) pyridinecarboxamides (picolinamide – pia, nicotinamide – nia, isonicotinamide – isn), [Ni(OCOCH3)(pia)2(H2O)]·(CH3COO)·2H2O (1), [Ni(nia)2(H2O)4](CH3COO)2·2H2O (2) and [Ni(OCOCH3)2(isn)2(H2O)]·C3H7NO (3) have been synthesized. The turquoise (1) and green (2, 3) crystals of the compounds were prepared by the reaction of nickel(II) acetate tetrahydrate and pyridinecarboxamides in different solvents by standard method under reflux (1) and by solvothermal method (2, 3). The compounds were characterized structurally by single-crystal X-ray diffraction analysis, magnetically and spectrally by FT-IR spectroscopy. All complexes consist of six coordinated central Ni2+ ion with pyridinecarboxamides, acetate ligands and/or water molecules. The interactions between building units in the crystal structures include intra- and intermolecular hydrogen bonds in all compounds and π–π interactions in complexes 1 and 2. Magnetic properties of the compounds were measured between 2K and 300K giving the results: μeff=3.0BM for compound 1, μeff=2.8BM for 2 and 2.6BM for compound 3 in paramagnetic region. Experimental values of the IR spectra are comparable with literature data and are in good agreement with results of the structural analysis.

Calculation of Cross-sections and Astrophysical S-Factors for 62Ni(α,n) and 62Ni(α,γ) Reactions of Structural Fusion Material Nickel

Nickel is an important element in fusion reactor technologies and astrophysical applications. Therefore, the knowledge of astrophysical S-factors and cross-sections on nickel isotopes is needed. In this work, the cross sections of the 62Ni(α,n) and 62Ni(α,γ) reactions have been calculated. The alpha capture cross sections was calculated up to 10 MeV. In these theoretical calculations, the TALYS 1.6 and NON-SMOKER codes were used. Also for the 62Ni(α,n) and 62Ni(α,γ) reactions, we calculated the astrophysical S-factors that determine the probability of reaction in low energies. Results of our calculations were checked to the experimental data obtained from EXFOR database.

Syntheses, characterization and antifungal activity of heteroleptic nickel(II) complexes with N-alkylsulfonyldithiocarbimates and phosphines

Four nickel(II) complexes of general formula [Ni(RSO2NCS2) (PPh3)2] where R = CH3 (2a), CH3CH2 (2b), CH3(CH2)3 (2c) and CH3(CH2)7 (2d) and PPh3 = triphenylphosphine; and two nickel(II) complexes of general formula [Ni(RSO2NCS2)dppe] where R = CH3(CH2)3 (3c) and CH3(CH2)7 (3d) and dppe = 1,2-bis(diphenylphosphine)ethane) were prepared. These new complexes were obtained by the reaction of nickel(II) chloride hexahydrate with potassium N-alkylsulfonyldithiocarbimates and the appropriate phosphine using ethanol/water as solvent. The IR, UV–Vis and 1H, 13C and 31P NMR spectra, elemental analysis of Ni and the HR-ESI-MS were consistent with the formation of square planar nickel(II) complexes with mixed ligands. The structures of the compounds 2b and 2c were determined by single crystal X-ray diffraction. The compounds are isostructural and crystallize in the space group P1¯ of the triclinic system. The activities of the complexes were investigated in vitro against Botrytis cinerea, Colletotrichum acutatum and Alternaria solani, fungi species that affect various commercially important plants. All the complexes were active.

Synthesis and structures of nickel(II) complexes with xanthurenate ions

The reaction of nickel(II) chloride with xanthurenic acid afforded two crystalline products, [Ni(HXan)2(H2O)4]·6H2O (1) and [Ni3(Xan)2(H2O)10][Ni(Xan)2]·4{(CH3)2CO}·2H2O (2), with HXan− and Xan2− standing for the deprotonated forms of the acid. Both compounds were unambiguously characterized by means of X-ray structure analysis. Their solid state structures give evidence of a presence of different xanthurenate ions and their tautomeric forms in the solution. Compound 1 is a mononuclear nickel(II) complex with metal ion in a nearly octahedral environment of six ligands: four aqua ligands and two trans positioned HXan− ions, each coordinated in a monodentate manner via a carboxylate oxygen. Compound 2 consists of trinuclear complex cations [Ni3(Xan)2(H2O)10]2+ and mononuclear complex anions [Ni(Xan)2]2−. The Xan2− ions of the complex ions in 2 are not the same, they differ in the position of the ionized hydroxyl moiety. With both compounds possessing several hydrogen bond donors and acceptors, intricate patterns of intramolecular connectivity may be observed in their solid state structures.

On the Hot Corrosion of Nickel at 700 °C

The reaction of nickel with Na2SO4 was studied in an O2–0.1SO2 atmosphere at 700 °C, conditions typical of type II hot corrosion. The interaction of NiO with the sulfate was thermodynamically analyzed and compared with the dissolution–precipitation process known to occur at higher temperatures. Here the dissolution stage was short-lived due to a positive solubility gradient for Ni2+. The relatively fast growth of a NiO layer above a nickel sulfide layer was attributed to the inward molecular transport of SO2–SO3 through the porous NiO. The influence of environmental variables was further assessed by reacting nickel with and without Na2SO4 in air and then with no deposit in O2–0.1SO2. The roles of the deposit and atmosphere on the boundary conditions affecting the oxidation–sulfidation process were discussed on the basis of the observed reaction paths.

Nickel(II) complexes having Imidazol-2-ylidene-N′-phenylurea ligand in the coordination sphere – syntheses and solid state structures

We report the syntheses and structural studies of two nickel(II) complexes of imidazol-2-ylidene- N′-phenylureate ligand of composition [{ImtBuNCON(H)Ph}2Ni(acac)2](1) and [(C6H5NH2)2Ni(acac)2][ImMes NCON(H)Ph] (2). The nickel complex 1 was readily prepared by the reaction of nickel(II) acetylacetonate [Ni(acac)2] with imidazol-2-ylidene-N′-phenylureate ligand [Im tBuNCON(H)Ph] (L1) in THF under reflux condition for 72 h. The nickel complex 2 was obtained by the reaction of [Ni(acac)2], mesityl derivative of imidazol-2-ylidene-N′-phenylureate ligand [Im MesNCON(H)Ph] (L2) in the presence of aniline as base under reflux condition in THF. Both the paramagnetic complexes have been characterized by FT-IR spectroscopy and elemental analyses. Solid-state structures of both the new complexes were established by single crystal X-ray diffraction analysis. In the molecular structures of complexes 1 and 2, each nickel(II) ion is six fold coordinated and form a distorted octahedral geometry. The optical properties of both complexes have been explored. The Hirshfeld surfaces are used to view and analyze the intermolecular contacts in crystalline state for complex 2. We report the synthesis and structures of two octahedral nickel(II) complexes supported by imidazol-2-ylidene-N′-phenylureate ligand.

Template synthesis of square-planar Ni(II) complexes with new thiophene appended Schiff base ligands: Characterization, X-ray structure and DFT calculation

The square planar nickel(II) complexes have been synthesized by the reaction of nickel(II) chloride hexahydrate and the in situ condensed thiophene appended Schiff base ligands of thiophene-2-ethylamine with 3,5-dimethyl-2-hydroxybenzaldehyde or 3,5-dichloro-2-hydroxybenzaldehyde for [Ni(L1)2] (1) and [Ni(L2)2] (2) respectively. The complexes have been characterized by several spectroscopic techniques, viz. FT-IR, 1H NMR, absorption and emission spectroscopy. The complexes crystallize in monoclinic crystal system with C2/c space group for 1 and triclinic crystal system with P−1 space group for 2. In complex 1 the nickel sits on an inversion centre with symmetry –x, 2–y, –z. Cyclic voltammgrams of the complexes show quasi-reversible NiII/NiIII oxidation couple along with irreversible NiII/NiI reduction. Electronic structure and spectral properties are well interpreted by DFT and TDDFT calculations.

Effect of additions of sodium hydroxide on the catalytic activity of partially deactivated skeletal nickel in reactions of the liquid-phase hydrogenation of sodium maleate in aqueous-organic media

The effect the concentration of sodium hydroxide has on the catalytic activity of skeletal nickel in reactions of the liquid-phase hydrogenation of sodium maleate in ternary methanol-water-sodium hydroxide solutions with a methanol content of 0.11 mole fractions and different concentrations of sodium hydroxide is studied. The key role of the solvent during changes in the activity of skeletal nickel in the hydrogenation reaction of sodium maleate is assumed, based on data on the redistribution of individual forms of adsorbed hydrogen.

β-Hydrogen Elimination Reactions of Nickel and Palladium Methoxides Stabilised by PCP Pincer Ligands.

Nickel and palladium methoxides [((iPr)PCP)M-OMe], which contain the (iPr)PCP pincer ligand, decompose upon heating to give products of different kinds. The palladium derivative cleanly gives the dimeric Pd(0) complex [Pd(μ-(iPr)PCHP)]2 ((iPr)PCHP = 2,6-bis(diisopropylphosphinomethyl)phenyl) and formaldehyde. In contrast, decomposition of [((iPr)PCP)Ni-OMe] affords polynuclear carbonyl phosphine complexes. Both decomposition processes are initiated by β-hydrogen elimination (BHE), but the resulting [((iPr)PCP)M-H] hydrides undergo divergent reaction sequences that ultimately lead to the irreversible breakdown of the pincer units. Whereas the Pd hydride spontaneously experiences reductive C-H coupling, the decay of its Ni analogue is brought about by its reaction with formaldehyde released in the BHE step. Kinetic measurements showed that the BHE reaction is reversible and less favourable for Ni than for Pd for both kinetic and thermodynamic reasons. DFT calculations confirmed the main conclusions of the kinetic studies and provided further insight into the mechanisms of the decomposition reactions.

Metal‐ and Substituent‐Dependent Structural Diversity in ­Cobalt and Nickel Isophthalate Coordination Polymers with Bis(4‐pyridylformyl)piperazine Tethers

AbstractHydrothermal reactions of nickel or cobalt nitrate with the dipyridylamide ligand bis(4‐pyridylformyl)piperazine (4‐bpfp) and either 5‐methoxyisophthalate (H2omeip) or 5‐methylisophthalate (H2mip) afforded a series of coordination polymers that were structurally characterized by single‐crystal X‐ray diffraction. Different synthetic conditions afforded the 1D chain phase {[Ni(Homeip)2(H2omeip)(bpfp)]·2H2O}n (1) or the mutually inclined interpenetrated (4, 4) grid system in {[Ni(omeip)(bpfp)(H2O)]·2H2O}n (2). The analogous cobalt phase {[Co(omeip)(bpfp)]·3H2O}n (3) lacks bound water molecules, which enforces a non‐interpenetrated (4, 4) grid structure based on {Co2(OCO)2} dinuclear clusters. Similar clusters are seen in {[Co(mip)(bpfp)(H2O)2]·3.5H2O}n (4), which manifests a 1D ribbon structural motif. Its nickel congener {[Ni(Hmip)2(bpfp)(H2O)2]·2H2mip}n (5) also shows a 1D chain motif. A variable temperature magnetic susceptibility study indicates antiferromagnetic coupling within the dimeric units in 3 and 4 concomitant with single ion effects. Additionally, thermal degradation properties of these new materials are described.

Improving Dispersion Plating of Nickel in Chloroaluminate Ionic Liquids

The alloying reaction of Nickel and Aluminum is exothermic and the heat output from this process can be utilized for many different applications from local brazing and welding to melting and heat generation as an energy source. One of the challenges associated with this reaction is that the components are in the solid state, thus mixing and reaction rates suffer from diffusion limitations. Structuring the separate elemental phases on the nanoscale is used to minimize diffusion distances and improve reactant mixing, increasing the overall rate. One method of fabricating these films with control over the nickel and aluminum phase structure is the electrochemical codeposition process. This technique allows for nickel particles on the nanoscale to be incorporated into an aluminum matrix, with control over the composition and size. This method has manufacturing cost, speed, and safety advantages over traditional thin film vacuum techniques, if some of the challenges to dispersion plating can be overcome.In the present work, the electrodeposition of Aluminum in 1-butyl 2-methylimidazolium based Ionic liquids was investigated as a means of incorporating disperse Nickel nanoparticles into an aluminum matrix material. While aluminum electrodeposition has been investigated thoroughly, modifications from normal parameters are required to compensate for the codeposition process. Chloroaluminate ionic liquids (ILs) are used for their desirable properties including room temperature operation, high purity and high efficiency aluminum deposition. 1-butyl 2-methylimidazolium cations were chosen specifically for their electrochemical stability. ILs are inherently high viscosity which affects the particulate mobility, the addition of co-solvents to the IL will significantly decrease the viscosity and allow for control of particle motion. This along with control of the convection of the electrolyte will allow for modification and optimization of transport of particles to the electrode surface. Energetic output is influenced by several different properties, the most important being composition. The production of maximum heat is realized when the stoichiometry of the nickel and aluminum are 1 to 1 as this allows the chemical reaction, the production of AlNi, to go to completion without excess of either constituents. The stoichiometry of Ni to Al is optimized to approach the correct ratio by controlling the transport of the particles to the surface as well as the growth rate of the aluminum matrix material. These parameters cannot be decoupled as the matrix material is what secures the particles to the electrode, and therefore they must be optimized together. The aluminum deposition has been investigated in the absence of particles to determine how the surfactants and co solvent dilutions affect the matrix growth characteristics. Migration and agglomeration of the particles in the electrolyte are very important as they determine the dispersion of the Ni phase in the deposited film. These properties are controlled by the surface chemistry of the particles in solution and by the particle-particle interaction in the solution. Pure nickel particles dispersed in the IL and co-solvent show loose agglomeration in the deposited film. Uniform distribution at the nanoscale is needed to ensure consistent burn properties once the reactions are triggered, so surface modification is used to decrease attraction between particles. These modifications include oxide layers as well as surfactants added to the electrolyte and results are shown in this work. Initial attempts of the high quantity incorporation show minor agglomeration of the as received nickel particles as can be seen in the back scattered SEM of a cross section of the deposited film, the lighter grey contrast is the nickel phase (figure 1). Deposits were fabricated and analyzed with various techniques including electrochemical quartz crystal microbalance (EQCM) for particle incorporation and viscosity measurements, zetasizer for particle agglomeration and mobility, rotating disk electrode (RDE) for transport properties, scanning electron microscopy (SEM) for dispersion imaging, Energy-dispersive X-ray spectroscopy (EDS) for elemental analysis, and differential scanning calorimetry (DSC) for exothermic reaction properties. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000. Figure 1

Comparison of Level Density Models for the 60,61,62,64Ni(p, n) Reactions of Structural Fusion Material Nickel from Threshold to 30 MeV

The knowledge of level density for reaction cross-section calculations are needed for various applications such as fission and fusion reactor design, accelerator driven sub-critical systems, nuclear medicine, neutron capture and astrophysics. In this study, the excitation functions for (p, n) reactions from reaction threshold to 30 MeV proton incident energy on 60Ni, 61Ni, 62Ni and 64Ni isotopes were calculated using TALYS 1.6 nuclear code involving the level density models. This is of importance to the validation of nuclear model approaches with increased predictive power. There are several models of level density that can be used to predict cross-section. In this work, the (p, n) cross-sections would be calculated using three different model of level density, such as constant temperature model, back-shifted fermi gas model and generalized superfluid model on 60,61,62,64Ni reactions. The (p, n) reaction cross-section calculations for 60,61,62,64Ni target nuclei were compared with each other and the experimental nuclear reaction data obtained from EXFOR database.

Anionic metal-organic framework for adsorption and separation of light hydrocarbons.

The reaction of nickel(II) sulfate with 4,4',4"-s-triazine-2,4,6-triyltribenzoate in dimethyl sulfoxide afforded a hexanuclear nickel(II)-based anionic 2-fold interpenetrated metal-organic framework exhibiting the ability to adsorb and separate light hydrocarbons and canted antiferromagnetism.