Nickel Coordination Polymers Research Articles

A comparative study of nickel and cadmium coordination polymers: Framework topology and proton conductivity

Two new coordination polymers (CPs), [Ni2(dip)2(obb)2]⋅2H2O, and [Cd2(dip)2(obb)2(H2O)]⋅5.5H2O, were successfully synthesized via hydrothermal processes utilizing the organic linkers 4,4′-oxybisbenzoate (obb) and 2,6-di(1H-imidazole-1-yl)pyridine (dip). The unique structures of both CPs were confirmed by single-crystal X-ray diffraction studies. Ni-CP presents an intricate three-fold interpenetrated 3D framework, featuring a rare cag topology centered around dinuclear nodes. In contrast, Cd-CP exhibits a distinctive non-interpenetrated 2D framework with an unusual kIa topology. Despite Cd-CP's water coordination and the inclusion of substantial guest water molecules, it unexpectedly exhibited lower proton conductivity than Ni-CP, which is non-porous and contains much less water content.

Fabrication of Fe@Ni-orotate coordination polymer composite: iron doping provokes the colorimetric recognition efficiency for naproxen drug and energy storage magnitude

Coordination polymers have emerged as promising materials for various applications due to their unique properties and structural versatility. Making a composite with coordination polymers may broaden their applications. In this study, we developed Iron doped Nickel Coordination polymer Fe@Ni-CP from previously synthesized nickel orotate coordination polymer and explored its efficacy in sensing Naproxen (NPX) and also as an electrode material for energy storage devices. Photoluminescence sensing investigations exhibited a notable enhancement in NPX sensing efficiency, whereby the Fe@Ni-CP composite displayed a sensing efficiency of 94.05 %, surpassing the 6.42 % efficiency observed when utilizing the Ni-Orotate coordination polymer alone. Moreover, both materials showed significant differences in specific capacitance when tested as energy storage electrodes using Cyclic Voltammetry (CV) and Galvanostatic Charge Discharge (GCD). The Fe@Ni-CP has specific capacitance of 810.83 F/g, compared to 468.00 F/g for the Ni-CP. In Cyclic Voltammetry, Fe@Ni-CP retained 91.07 % specific capacitance after 4000 cycles. These findings underscore the potential of Fe@Ni-CP for multifunctional applications in sensing and energy storage.

3D hierarchical porous N-doped carbon nanoarchitecture coated bimetallic phosphides as a highly efficient bifunctional electrocatalyst for overall water splitting

As the energy and ecological crises are increasingly grim, it is challengeable but extremely attractive to fabricate highly efficient and low-cost bifunctional electrocatalysts for overall water splitting (OWS). Herein, a bimetallic phosphide embedded in N-doped hierarchical porous carbon (CoP/Ni2P@NHPC) framework was successfully constructed by calcination and phosphorization of cobalt–nickel coordination polymer nanoflowers (Co/Ni CPNFs), which were obtained by a facile hydrothermal process. Benefitting from their fascinating architecture and composition, the as-prepared CoP/Ni2P@NHPC exhibits outstanding electrochemical properties for both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) with small Tafel slopes (103.9 mV dec-1, 62.58 mV dec-1) and ultralow overpotentials (275 mV, 159 mV at 10 mA cm−2) in alkaline medium. Additionally, the CoP/Ni2P@NHPC can be used as a bifunctional catalyst in a two-electrode water splitting device, and it only requires a low cell voltage of 1.55 V to attain the current density of 10 mA cm−2. Meanwhile, the CoP/Ni2P@NHPC also present admirable durability (at least 20 h) under long-term electrolysis. This work gives inspiration for the preparation of highly active bifunctional electrocatalysts for OWS.

A polycatenated nickel(II) coordination polymer as a luminescence sensor for nitrofurantoin in aqueous medium

Abstract A Ni(II) complex, [Ni2(FDC)2(4,4′-BMIBP)2(H2O)2·3H2O] n (1) (4,4′-BMIBP = 4,4’-bis(2-methyl-imidazolyl)biphenyl, H2FDC = 2,5-furandicarboxylic acid) was hydrothermally synthesized and structurally characterized. Complex 1 possesses a polycatenated architecture based on an undulated (4,4)-sql layer. Complex 1 can be used for the selective detection of nitrofurantoin (NFT) in aqueous solutions. The luminescence quenching mechanism of complex 1 is attributed to the competitive absorption.

Construction, structures, and magnetic studies of two cobalt(II) and nickel(II) coordination polymers displaying bex topology

The synthesis, structures, adsorption, and magnetic properties of two two-dimensional (2D) coordination polymers, [M(btca)1/2(bpe)1/2(H2O)2]n (M = Ni2+ (1) and Co2+ (2); H4btca = 1,2,4,5-benzenetetracarboxylic acid; bpe = 1,2-di(4-pyridyl)ethane) constructed by...

Crystal structure and luminescence spectrum of a one-dimensional nickel(II) coordination polymer incorporating 1,4-bis-[(2-methyl-imidazol-1-yl)meth-yl]benzene and adamantane-1,3-di-carboxyl-ate co-ligands.

An NiII coordination polymer, namely, poly[(μ2-adamantane-1,3-di-carboxyl-ato-κ4 O 1,O 1':O 3,O 3')[μ2-1,4-bis-(2-methyl-imidazol-1-ylmeth-yl)benzene-κ2 N 3:N 3']nickel(II)], [Ni(C12H14O4)(C16H18N4)]n or [Ni(adc)(bmib)]n, (I) [adc = adamantane-1,3-di-carboxyl-ate, C12H14O4 2- and bmib = 1,4-bis-(2-methyl-imidazol-1-ylmeth-yl)benzene, C16H18N4] was synthesized and characterized. It exhibits a one-dimensional extended structure built up from alternating [Ni2(bmib)2] 26-membered rings and [Ni2(adc)2] 16-membered rings. The nickel atom lies on a crystallographic twofold axis and both ligands are completed by mirror symmetry. The solid-state luminescence spectra of (I) and the bmib ligand show strong emissions at 442 and 410 nm, respectively.

Nickel(II) Coordination Polymer Using Pyrazine Linkers and Phthalate Counter-Anion: Synthesis, Crystal Structure, Hirshfeld Surface and Voids Analysis

Nickel(II) Coordination Polymer Using Pyrazine Linkers and Phthalate Counter-Anion: Synthesis, Crystal Structure, Hirshfeld Surface and Voids Analysis

A novel structurally characterized 4,4ʹ-bipyridine-salamo-like nickel(II) coordination polymer fluorescence probe for selective sensing of Cr2O72− and 4-nitrophenol

The elaborately designed nonsymmetric salamo-like ligand (H2L, 4-chloro-4′-bromo-6-bromo-6′-tert-butyl-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol), has been employed to construct a novel fluorescent coordination polymer (CPs). Ingeniously, bearing the host ligand H2L and auxiliary ligand 4,4ʹ-bipyridine (4,4ʹ-bipy), a tailored luminescent probe, namely [Ni(L)(4,4ʹ-bipy)]n (Ni(II)-CP), was prepared and determined through single crystal X-ray diffraction experiment. Interestingly, the Ni(II) atom possesses a slightly twisted hexa-coordinate octahedron configuration. At the same time, an infinite one-dimensional (1D) chain-shaped structure was formed with the intervention strategy of auxiliary ligand. The luminescence properties studied describe the unusual selectivity, sensitivity and recyclability of the detection of 4-nitrophenol (4-NP) and Cr2O72−. In addition, possible fluorescence quenching mechanisms were also explored.

Electrochemical Properties and Perspectives of Nickel(II) and Cobalt(II) Coordination Polymers-Aspects and an Application in Electrocatalytic Oxidation of Methanol

The electrochemical sensing potential of two isostructural one-dimensional nickel(II) and cobalt(II) coordination polymers with 4,4′-bipyridine (4,4′-bpy) and 6-oxonicotinate (6-Onic), namely, {[Ni(4,4′-bpy)(H2O)4](6-Onic)2×2H2O}n and {[Co(4,4′-bpy)(H2O)4](6-Onic)2×2H2O}n, was investigated along with the polymers’ potential applications in the catalytic oxidation of methanol. The highly oxidative species from redox pairs Ni(II)/Ni(III) and Co(II)/Co(III) in these compounds represent catalytically active centres for oxidation of small molecules. A glassy carbon electrode (GCE) modified with a Ni polymer showed stability and reproducibility in 0.1 M NaOH, while the oxidation current inc 2reased with the increasing methanol concentration, suggesting that the Ni-polymer-modified electrode possess good sensing ability with respect to methanol. The GC electrode modified with the Co polymer is not reproducible and cannot be used for electroanalytical purposes under these experimental conditions. The GC electrode modified with the Ni polymer was successfully applied in the determination of methanol. This method showed favourable linear concentration dependence with a good sensitivity of 2.65 and 11.0 mA mM−1, a wide concentration range (0.001–4 mM), and a detection limit of 0.8 μM, which indicates its excellent application potential for methanol oxidation and thus its determination.

Synthesis, characterization and magnetochemical study of cobalt, nickel and manganese coordination polymers

Three new polymeric tridimensional compounds with the composition [M3(seb)3(phen)2]n, where M = Co(II), Ni(II) and Mn(II), seb = (OOC–C8H16–COO)2-, phen = C12H8N2 were synthesized and characterized by physical and physico-chemical methods. The X-ray study revealed that the structures of all three coordination polymers consist of the trinuclear cores joined through sebacate dianions. The thermoanalytical study showed that coordination polymers are stable up to 250 °C and further heating results in the framework decomposition. Magnetic susceptibility data showed antiferromagnetic interactions in the Mn3 and Ni3 cores and ferromagnetic behavior for Co3 moiety.

Nickel (II) coordination polymer using pyrazine linkers and phthalate counter-anion: Synthesis, crystal structure, Hirshfeld surface and voids analysis

Herein, a new Ni(II) carboxylate polymer, [Ni(Pyr).4H 2 O]Phth , is synthesized by the reaction of NiSO 4 .7H 2 O with equimolar amounts of phthalic acid (PhthH 2 ) as the counter-anion and pyrazine (Pyr) as an ancillary ligand in aqueous media. The crystal structure of [Ni(Pyr).4H 2 O]Phth is investigated by single crystal X-rays diffraction analysis, which inferred the ionic nature of the complex. In cation, the Ni-center is coordinated by two pyrazine rings and four water molecules to form an octahedral coordination geometry. The crystal structure exists as a one-dimensional polymeric structure. The crystal packing is stabilized by OH O and CH O bonding. The non-covalent interactions are investigated by Hirshfeld surface analysis. The enrichment ratio delivers the tendency of the interaction of the pair of chemical moieties, which are involved in the packing of crystals. Moreover, void analysis is executed to look at the packing efficiency, which helps in predicting the mechanical response of the compound.

Syntheses, Structural Characterization of Nickel and Zinc Coordination Polymers Composed of Dicarboxylate and Bis(4-(1H-benzo[d]imidazol-1-yl)phenyl)methanone Ligands

Syntheses, Structural Characterization of Nickel and Zinc Coordination Polymers Composed of Dicarboxylate and Bis(4-(1H-benzo[d]imidazol-1-yl)phenyl)methanone Ligands

First Example of Chromone-Based Nickel(II) Coordination Polymers with Tunable Magnetic Properties

First Example of Chromone-Based Nickel(II) Coordination Polymers with Tunable Magnetic Properties

Molecular Engineering of Quinone-Based Nickel Complexes and Polymers for All-Organic Li-Ion Batteries.

All-organic Li-ion batteries appear to be a sustainable and safer alternative to the currently-used Li-ion batteries but their application is still limited due to the lack of organic compounds with high redox potentials toward Li+/Li0. Herein, we report a computational design of nickel complexes and coordination polymers that have redox potentials spanning the full voltage range: from the highest, 4.7 V, to the lowest, 0.4 V. The complexes and polymers are modeled by binding low- and high-oxidized Ni ions (i.e., Ni(II) and Ni(IV)) to redox-active para-benzoquinone molecules substituted with carboxyl- and cyano-groups. It is found that both the nickel ions and the quinone-derived ligands are redox-active upon lithiation. The type of Ni coordination also has a bearing on the redox potentials. By combining the complex of Ni(IV) with 2-carboxylato-5-cyano-1,4-benzoquinones as a cathode and Ni(II)-2,5-dicarboxylato-3,6-dicyano-1,4-benzoquinone coordination polymer as an anode, all-organic Li-ion batteries could be assembled, operating at an average voltage exceeding 3.0 V and delivering a capacity of more than 300 mAh/g.

A Novel Organometallic Coordination Polymer as a Heterogeneous Catalyst for C−C Bond Formation

One-pot solvothermal reaction of Ni(II) salt with 2-aminopyridine and thiethyl orthoformate in methanol afforded a novel one-dimensional nickel coordination polymer which can be regarded as a potential heterogeneous catalyst for nitroaldol (Henry) reaction.

Nickel(II) Coordination Polymers Supported by Bis-pyridyl-bis-amide and Angular Dicarboxylate Ligands: Role of Ligand Flexibility in Iodine Adsorption.

Reactions of N‚N’-bis(3-pyridylmethyl)oxalamide (L1), N‚N’-bis(4-pyridylmethyl)oxalamide (L2), or N,N’-bis(3-pyridylmethyl)adipoamide) (L3) with angular dicarboxylic acids and Ni(II) salts under hydro(solvo)thermal conditions afforded a series of coordination polymers: {[Ni(L1)(OBA)(H2O)]·H2O}n (H2OBA = 4,4-oxydibenzoic acid), 1, {[Ni(L1)(SDA)(H2O)2]·H2O·CH3OH}n (H2SDA = 4,4-sulfonyldibenzoic acid), 2, {[Ni(L2)(OBA)]·C2H5OH}n, 3, {[Ni(L2)(OBA)]·CH3OH}n, 4, {[Ni2(L2)(SDA)2(H2O)3]·5H2O}n, 5, {[Ni2(L2)(SDA)2(H2O)3]·H2O·2C2H5OH}n, 6, {[Ni(L3)(OBA)(H2O)2]·2H2O}n, 7, {[Ni(L3)(SDA)(H2O)2]·2H2O}n, 8, and {[Ni(L3)0.5(SDA)(H2O)2]·0.5C2H5OH}n, 9, which have been structurally characterized by using single-crystal X-ray crystallography. Complex 1 exhibits an interdigitated 2D layer with the 2,4L2 topology and 2 is a 2D layer with the sql topology, while 3 and 4 are 3D frameworks resulting from polycatenated 2D nets with the sql topology and 5 and 6 are 2-fold interpenetrated 3D frameworks with the dia topology. Complexes 7 and 8 are 1D looped chains and 9 is a 2D layer with the 3,4L13 topology. The various structural types in 1–9 indicate that the structural diversity is subject to the flexibility and donor atom position of the neutral spacer ligands and the identity of the angular dicarboxylate ligands, while the role of the solvent is uncertain. The iodine adsorption of 1–9 was also investigated, demonstrating that that the flexibility of the spacer L1–L3 ligands can be an important factor that governs the feasibility of the iodine adsorption. Moreover, complex 9 shows a better iodine adsorption and encapsulates 166.55 mg g−1 iodine in the vapor phase at 60 °C, which corresponded to 0.38 molecules of iodine per formula unit.

Synthesis, crystal structures, and magnetic properties of three nickel (II) coordination polymers based on a rigid pyrazine carboxylic acid containing different N ligands

Three novel nickel (II) coordination polymers [Ni3(L)2(4,4′-bipy)2(NO3)2(H2O)4]n(1), [Ni(L)(4,4′-bipy)0.5]n(2), and [Ni(L)(dib)0.5(H2O)2]n(3) have been successfully constructed using the hydrothermal reactions of Ni(NO3)2·6H2O with 2,4-[6-(4-carboxyphenyl)pyrazin-2-yl]benzoic acid (H2L) and corresponding N-donor ligands, namely, 4,4′-bipyridine (4,4′-bipy) and 1,4-di(1H-imidazole-1-yl) benzene (dib), respectively. Single crystal X-ray analysis reveals that compound 1 exhibits a 3D supramolecular architecture linked by the L2− and 4,4′-bipy ligands, compound 2 possesses a 3D 2-fold interpenetrating framework, and compound 3 displays an infinite 2D framework formed by the L2− and dib ligands. The phase purity, IR spectra, thermal stabilities, and Hirshfeld surface analyses of 1–3 have been investigated. Additionally, the magnetic behaviors for 2–3 have also been studied, revealing weak antiferromagnetic interactions between Ni (II) centers in them.

Rapid Photocatalytic Degradation for Cationic Dyes Andsupercapacitor Property of 2d Novel Nickel Coordination Polymer and its Ag-Loaded Product

Rapid Photocatalytic Degradation for Cationic Dyes Andsupercapacitor Property of 2d Novel Nickel Coordination Polymer and its Ag-Loaded Product

Rapid Photocatalytic Degradation for Cationic Dyes Andsupercapacitor Property of 2d Novel Nickel Coordination Polymer and its Ag-Loaded Product

Rapid Photocatalytic Degradation for Cationic Dyes Andsupercapacitor Property of 2d Novel Nickel Coordination Polymer and its Ag-Loaded Product

Rapid Photocatalytic Degradation for Cationic Dyes Andsupercapacitor Property of 2d Novel Nickel Coordination Polymer and its Ag-Loaded Product

Rapid Photocatalytic Degradation for Cationic Dyes Andsupercapacitor Property of 2d Novel Nickel Coordination Polymer and its Ag-Loaded Product