A Three-Dimensional Nickel(II) Framework from a Semi-Flexible Bipyrimidyl Ligand Showing Weak Ferromagnetic Behavior

Dong, Shin-Shan

doi:10.3390/polym11010119

Cited by 6 publications

(3 citation statements)

References 40 publications

(43 reference statements)

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“…Moreover, our research group has consistently delved into the coordination chemistry of bis(pyrimidine) ligands, as they have proven to be promising candidates for the development of magnetic materials due to their strong coordination affinity [19,20]. In line with these considerations, this study presents a novel two-dimensional coordination polymer achieved by incorporating N 3 − into systems involving divalent Co ions and the ligand 1,4-bis(5-pyrimidyl)benzene (bpmb).…”

Section: Introductionmentioning

confidence: 86%

Spin Canting and Weak Ferromagnetism in a New 2D Coordination Polymer with the Co(II) Chain Bridged by a Single End-to-End Azide

Kuo,

Liu,

Yang

2023

Inorganics

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By employing semi-flexible multi-N donor auxiliary ligands, namely 1,4-bis(5-pyrimidyl)benzene (bpmb) in conjunction with azide, novel Co(II) 2D coordination polymers have been successfully synthesized and structurally characterized, along with magnetic analysis. The resulting compound, {Co(N3)(bpmb)(H2O)2·H2O}n (1), exhibits a unique 2D structure comprised of interconnected Co(II) chains bridged by single end-to-end (EE) azide moieties. These chains are further linked by twisted trans-μ2-N,N′-bpmb auxiliary ligands, forming a grid-like network. Additionally, the layers are held together in a 3D arrangement through hydrogen bonding interactions between the coordination water and the N atom of the bpmb ligands. Importantly, magnetic investigations reveal that compound 1 displays weak ferromagnetism attributed to spin canting, with a critical temperature (Tc) of 12 K.

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Section: Introductionmentioning

confidence: 86%

Spin Canting and Weak Ferromagnetism in a New 2D Coordination Polymer with the Co(II) Chain Bridged by a Single End-to-End Azide

Kuo,

Liu,

Yang

2023

Inorganics

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“…Despite the fact that spin canting is a phenomenon traditionally linked to strong anisotropic metal ions with first‐order SO coupling, such as Co II , long‐range canted antiferromagnetism has previously been observed for CPs containing weak anisotropic ions with a second‐order SOC, such as Ni II . It should be noted that some of these extended compounds show, similar to 4 Ni , superexchange pathways that involve pyrimidine and related ligands . As in the case of 3 Co , spin canting in 4 Ni is primarily due to antisymmetric magnetic interactions arising from the lack of inversion centre between each pair of neighbouring Ni II ions connected by the 2ani bridging ligand.…”

Section: Resultsmentioning

confidence: 92%

Modulating Magnetic and Photoluminescence Properties in 2‐Aminonicotinate‐Based Bifunctional Coordination Polymers by Merging 3d Metal Ions

Pajuelo-Corral

Zabala-Lekuona

Sebastián

et al. 2020

Chemistry A European J

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Herein, the synthesisa nd study of bifunctional coordination polymers (CPs) with both magnetica nd photoluminescence properties, derivedfrom ah eterometallice nvironment, are reported.A sastarting point, three isostructural monometallicC Ps with the formula [M(m-2ani) 2 ] n (M II = Mn (1 Mn), Co (3 Co)a nd Ni (4 Ni); 2ani = 2-aminonicotinate), crystallise as chiral 2D-layered structures stacked by means of supramolecular interactions. These compounds show high thermals tabilityi nt he solid state (above3 50 8C), despite which, in aqueous solution,c ompound 1 Mn is shown to partially transform into an ovel 1D chain CP with the formula [Mn(2ani) 2 (m-H 2 O) 2 ] n (2 Mn). As tudy of the direct current (dc) magnetic properties of 1 Mn , 3 Co and 4 Ni revealsaspin-canted structure derived from antisymmetric antiferromagnetic weak exchanges along the chiral network (as confirmed by DFT calculations) and magnetic anisotropy of the ions, in such aw ay that long-range ordering is observed with variable magnitude for the spin carriers.M oreover,c ompounds 3 Co and 4 Ni show no frequency-dependent alternating current (ac)s usceptibilityc urvesu nder zero dc field;t his is characteristic behaviour of ag lassy state that may be partially supressed for 3 Co by applyinga ne xternal dc field. To overcome long-rangem agnetic ordering,C o II ions are diluted in ad iamagnetic Zn II-based matrix, which enables single-molecule magnet behaviour.I nterestingly,t his strategy allows a bifunctional Co x Zn 1Àx 2ani material, whichi si mbuedw ith a strongp hotoluminescent emitting capacity,a sc haracterised by an intenseb lue light followed by ag reen afterglow,t o be obtained.

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“…However, no bifurcation is observed in the ZFC and FC curves, suggesting the absence of long-range magnetic ordering in compound 1. [43][44][45]…”

Section: Magnetic Analysis Ofmentioning

confidence: 99%

Construction of A sqc6 Topology Ni‐Gd Framework Employing 2,2’‐Phosphinico‐dibenzoate and Oxalate: Structure and Magnetic Properties

Tan,

Chen,

et al. 2023

Zeitschrift anorg allge chemie

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A 3d–4f heterometallic compound, namely [Ni6GdL4(ox)(H2O)12]⋅[NO3]⋅14.5H2O (1) (L=2,2’‐phosphinico‐dibenzoate and ox=oxalate), was obtained by self‐assembly of nickel nitrate, gadolinium nitrate, oxalic acid, and 2,2’‐phosphinico‐dibenzoic acid (H3L). Such compound has been structurally characterized via single‐crystal X‐ray diffraction analysis and infrared spectroscopy. This compound features a basic unit of {Ni4Gd} clusters and 2,2’‐phosphinico‐dibenzoate ligands. Each unit is connected by another Ni2+ through the axial coordination of benzoate oxygen to form a layer. Meanwhile, each oxalate ligand bridges the expanded Ni4Gd‐Ni4 net, constructing a 3‐D framework. From the viewpoint of network topology, this compound can be simplified as a sqc6 topology. Magnetic analysis shows ferromagnetic interactions between the Ni(II) and Gd(III) centers in Ni4Gd nodes and antiferromagnetic coupling with oxalate bridges in this compound.

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A Three-Dimensional Nickel(II) Framework from a Semi-Flexible Bipyrimidyl Ligand Showing Weak Ferromagnetic Behavior

Cited by 6 publications

References 40 publications

Spin Canting and Weak Ferromagnetism in a New 2D Coordination Polymer with the Co(II) Chain Bridged by a Single End-to-End Azide

Spin Canting and Weak Ferromagnetism in a New 2D Coordination Polymer with the Co(II) Chain Bridged by a Single End-to-End Azide

Modulating Magnetic and Photoluminescence Properties in 2‐Aminonicotinate‐Based Bifunctional Coordination Polymers by Merging 3d Metal Ions

Construction of A sqc6 Topology Ni‐Gd Framework Employing 2,2’‐Phosphinico‐dibenzoate and Oxalate: Structure and Magnetic Properties

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