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Coordination polymer

About: Coordination polymer is a research topic. Over the lifetime, 11988 publications have been published within this topic receiving 212219 citations.


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Journal ArticleDOI
Hongwei Hou1, Linke Li1, Gang Li1, Yaoting Fan1, Yu Zhu1 
TL;DR: An unprecedented metal-organic coordination polymer containing ferrocenecarboxylate units coordinating with Pb(II) or Zn(II), leading to a new type of metal- organic coordination polymer.
Abstract: Using FcCOONa (Fc = (eta(5)-C(5)H(5))Fe(eta(5)-C(5)H(4))) as starting material, we obtained an unprecedented metal-organic coordination polymer containing ferrocenecarboxylate components [[Pb(2)(FcCOO)(eta(2)-FcCOO)(mu(2)-eta(2)-FcCOO)(mu(3)-eta(2)-FcCOO)(CH(3)OH)].1.5CH(3)OH.H(2)O](n) (1), tetramer [Zn(4)(mu(2)-FcCOO)(6)(mu(4)-O)] (2), and coordination polymers [Pb(FcCOO)(mu(2)-FcCOO)(bpe)](n) (3) (bpe = 1,2-bis(4-pyridyl)ethene), [[Zn(FcCOO)(2)(bpt)].2.5H(2)O](n) (4) (bpt = N,N'-bis(3-pyridylmethyl)thiourea), and [Zn(FcCOO)(eta(2)-FcCOO)(bbp)](n) (5) (bbp = 4,4'-trimethylene-dipyridine). Compounds 1 and 2 are formed by ferrocenecarboxylate units coordinating with Pb(II) or Zn(II). In polymer 1, ferrocenecarboxylate units have four kinds of coordinate modes; just these novel coordinate modes lead to the unprecedented one-dimensional polymer where two kinds of rhomboids are arranged alternatively along the chain. Compound 2 is a tetramer, in which a distinct connectivity of the six ferrocene units is established through the four Zn atoms. Compounds 3-5 are obtained by organic ligands bridging Pb(II) or Zn(II), leading to a new type of metal-organic coordination polymer.

74 citations

Journal ArticleDOI
TL;DR: In this article, an asymmetric semi-rigid V-shaped multicarboxylate ligand with the help of 4,4-bipyridine (4,4′-bpy) ligand was used to construct the first metal-organic hybrid tube.
Abstract: Novel nickel(II) coordination polymers have been constructed from asymmetric semi-rigid V-shaped multicarboxylate ligands with the help of 4,4′-bipyridine (4,4′-bpy) ligand. The hydrothermal reaction between 3-(4-carboxy-phenoxy)-phthalic acid (H3L1) and Ni(OAc)2·4H2O led to the formation of [Ni3(L1)2(μ-4,4′-bpy)3(H2O)2]n·(4,4′-bpy)n·(H2O)5n (1). In contrast, the same reaction using 3-(2-carboxy-phenoxy)-phthalic acid (H3L2) as a starting material instead of H3L1 resulted in [Ni3(L2)2(H2O)4(μ-4,4′-bpy)3]n·(H2O)2n (2) and [Ni3(L2)2(H2O)4(μ-4,4′-bpy)4]n·(H2O)2n (3) at 120 and 150 °C, respectively, revealing the effect of reaction temperature on the structure of the coordination polymer formed from the semi-rigid V-shaped ligand of L2. Single-crystal X-ray diffraction analysis reveals that complex 1 shows a 3D framework structure assembled from right- and left-handed helices together with isolated tubes. This compound represents the first metal–organic hybrid tube constructed from an asymmetric semi-rigid V-shaped multicarboxylate ligand. Compound 2 also exhibits a 3D network composed of discontiguous trinuclear Ni(II) clusters, while the 3D architecture of 3 consisting of isolated Ni(II) ions separated in a long distance is constructed by two kinds of 2D (6,3) networks. Magnetic studies reveal the overall antiferromagnetic interaction between the neighbouring Ni(II) ions in 1–3.

74 citations

Journal ArticleDOI
TL;DR: In this compound metamagnetism and single-chain magnetic behavior coexist and an unexpected magnetic behavior is found, which to the best of the authors' knowledge was never observed before for a iron(II) homospin compound.
Abstract: Reaction of FeCl(2)·4H(2)O with KNCSe and pyridine in ethanol leads to the formation of the discrete complex [Fe(NCSe)(2)(pyridine)(4)] (1) in which the Fe(II) cations are coordinated by two N-terminal-bonded selenocyanato anions and four pyridine co-ligands. Thermal treatment of compound 1 enforces the removal of half of the co-ligands leading to the formation of a ligand-deficient (lacking on neutral co-ligands) intermediate of composition [Fe(NCSe)(2)(pyridine)(2)](n) (2) to which we have found no access in the liquid phase. Compound 2 is obtained only as a microcrystalline powder, but it is isotypic to [Cd(NCSe)(2)(pyridine)(2)](n) and therefore, its structure was determined by Rietveld refinement. In its crystal structure the metal cations are coordinated by two pyridine ligands and four selenocyanato anions and are linked into chains by μ-1,3 bridging anionic ligands. Magnetic measurements on compound 1 show only paramagnetic behavior, whereas for compound 2 an unexpected magnetic behavior is found, which to the best of our knowledge was never observed before for a iron(II) homospin compound. In this compound metamagnetism and single-chain magnetic behavior coexist. The metamagnetic transition between the antiferromagnetically ordered phase and a field-induced ferromagnetic phase of the high-spin iron(II) spin carriers is observed at a transition field H(C) of 1300 Oe and the single-chain magnetic behavior is characterized by a blocking temperature T(B), estimated to be about 5 K.

74 citations

Journal ArticleDOI
TL;DR: A thermally activated delayed fluorescence tetrametallic Cu(I) metallacycle A behaves as a conformationally adaptive preorganized precursor to afford, through straightforward and rational coordination-driven supramolecular processes, a variety of room-temperature solid-state luminescent polymetallic assemblies.
Abstract: A thermally activated delayed fluorescence (TADF) tetrametallic Cu(I) metallacycle A behaves as a conformationally adaptive preorganized precursor to afford, through straightforward and rational coordination-driven supramolecular processes, a variety of room-temperature solid-state luminescent polymetallic assemblies. Reacting various cyano-based building blocks with A, a homometallic Cu(I) 1D-helical coordination polymer C and Cu8M discrete circular heterobimetallic assemblies DM (M = Ni, Pd, Pt) are obtained. Their luminescence behaviors are studied, revealing notably the crucial impact of the spin–orbit coupling offered by the central M metal center on the photophysical properties of the heterobimetallic DM derivatives.

74 citations

Journal ArticleDOI
TL;DR: It is shown that a concept of “compartmentalized” coordination polymers in which van der Waals interactions between components of the coordination polymer framework are replaced by a cascade of more specific, directional interactions that limit the ways in which thecoordination polymer strands can interact can be used to engineer the formation of discrete water clusters.
Abstract: been several recent reports of Borromean coordination polymers, with previously unrecognised examples being correctly classified by Carlucci et al. while Stoddart and coworkers have synthesized a discrete Borromeate complex. Much of the interest in coordination polymer chemistry stems from the creation of robust porous frameworks capable of containing guest molecules. Topological connectivity such as interpenetration and the formation of Borromean linkages potentially represents a way of increasing the mechanical strength of these materials since the rings cannot be separated without breaking generally strong chemical bonds. While Borromean linkages or interpenetration can reduce the available free space within a coordination polymer or metal–organic framework (MOF), it increases the surface area of the framework thereby promoting the surface adsorption of gases, for example. Considerable effort has been expended to prevent interpenetration in MOFs, with the use of the bulky secondary building unit (SBU) concept borrowed from zeolite chemistry being particularly effective. The tendency to fill space either by guest inclusion or interpenetration/interlinking arises from the nondirectional stabilizing influence of van der Waals forces. We have been working on a concept of “compartmentalized” coordination polymers in which van der Waals interactions between components of the coordination polymer framework are replaced by a cascade of more specific, directional interactions that limit the ways in which the coordination polymer strands can interact. More generally, we have shown that such a strategy can be used to engineer the formation of discrete water clusters. In the particular case of coordination polymers, we aim to engineer the creation of materials with a high surface area that contain void space for guest inclusion. We now report such a compartmental coordination polymer in which a Borromean structure forms. The rings are held strictly in register by coordination interactions, argentophilic interactions, and saturated hydrogen bonding to nitrate counterions. We (and others) have designed ligands of type L (Scheme 1) to contain well-defined, divergent cation-binding,

74 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023152
2022360
2021576
2020657
2019663
2018688