Syntheses, Crystal Structures, Luminescent Properties, and Electrochemical Synthesis of Group 12 Element Coordination Polymers with 4-Substituted 1,2,4-Triazole Ligands

Benaissa, Houria; Wolff, Mariusz; Robeyns, Koen; Knör, Günther; Hecke, Kristof Van; Campagnol, Nicolò; Fransaer, Jan; Garcia, Yann

doi:10.1021/acs.cgd.9b00734

Cited by 22 publications

(15 citation statements)

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“…4, each Zn II cation adopts a distorted tetrahedral [ZnN 2 Cl 2 ] coordination environment consisting of two N atoms from two different L ligands [N5 and N6; Zn1-N5 = 2.064 (3) Å and Zn1-N6 = 2.060 (3) Å ] and two coordinated chloride counter-ions [Cl1 and Cl2; Zn1-Cl1 = 2.2161 (11) Å and Zn1-Cl2 = 2.2151 (12) Å ]. The coordination behaviour of the Zn II cation is similar to that reported for other Zn II complexes (Benaissa et al, 2019;Hao et al, 2020;Jones et al, 2012).…”

Section: Figuresupporting

confidence: 82%

Syntheses and structures of three macrocyclic supramolecular complexes and one Zn^II-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand

et al. 2021

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Semirigid organic ligands can adopt different conformations to construct coordination polymers with more diverse structures when compared to those constructed from rigid ligands. A new asymmetric semirigid organic ligand, 4-{2-[(pyridin-3-yl)methyl]-2H-tetrazol-5-yl}pyridine (L), has been prepared and used to synthesize three bimetallic macrocyclic complexes and one coordination polymer, namely, bis(μ-4-{2-[(pyridin-3-yl)methyl]-2H-tetrazol-5-yl}pyridine)bis[dichloridozinc(II)] dichloromethane disolvate, [Zn2Cl4(C12H10N6)2]·2CH2Cl2, (I), the analogous chloroform monosolvate, [Zn2Cl4(C12H10N6)2]·CHCl3, (II), bis(μ-4-{2-[(pyridin-3-yl)methyl]-2H-tetrazol-5-yl}pyridine)bis[diiodidozinc(II)] dichloromethane disolvate, [Zn2I4(C12H10N6)2]·2CH2Cl2, (III), and catena-poly[[[diiodidozinc(II)]-μ-4-{2-[(pyridin-3-yl)methyl]-2H-tetrazol-5-yl}pyridine] chloroform monosolvate], {[ZnI2(C12H10N6)]·CHCl3} n , (IV), by solution reaction with ZnX 2 (X = Cl and I) in a CH2Cl2/CH3OH or CHCl3/CH3OH mixed solvent system at room temperature. Complex (I) is isomorphic with complex (III) and has a bimetallic ring possessing similar coordination environments for both of the ZnII cations. Although complex (II) also contains a bimetallic ring, the two ZnII cations have different coordination environments. Under the influence of the I− anion and guest CHCl3 molecule, complex (IV) displays a significantly different structure with respect to complexes (I)–(III). C—H...Cl and C—H...N hydrogen bonds, and π–π stacking or C—Cl...π interactions exist in complexes (I)–(IV), and these weak interactions play an important role in the three-dimensional structures of (I)–(IV) in the solid state. In addition, the fluorescence properties of L and complexes (I)–(IV) were investigated.

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Section: Figuresupporting

confidence: 82%

Syntheses and structures of three macrocyclic supramolecular complexes and one Zn^II-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand

et al. 2021

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“…Interestingly, Zn-SBF-2 complex displays similar rows with alternating monodentate and bidentate carboxylates along both the directions of the grid, while Zn-SBF-3 complex shows two different rows, one with only bidentate and the other with only monodentate carboxylates along two directions of the grid. Many other sql nets have been given in the literature. − …”

Section: Design Strategiesmentioning

confidence: 99%

Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications

et al. 2021

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Among the recent developments in metal-organic frameworks (MOFs), porous layered coordination polymers (CPs) have garnered attention due to their modular nature and tunable structures. These factors enable a number of properties and applications, including gas and guest sorption, storage and separation of gases and small molecules, catalysis, luminescence, sensing, magnetism, and energy storage and conversion. Among MOFs, two-dimensional (2D) compounds are also known as 2D CPs or 2D MOFs. Since the discovery of graphene in 2004, 2D materials have also been widely studied. Several 2D MOFs are suitable for exfoliation as ultrathin nanosheets similar to graphene and other 2D materials, making these layered structures useful and unique for various technological applications. Furthermore, these layered structures have fascinating topological networks and entanglements. This review provides an overview of different aspects of 2D MOF layered architectures such as topology, interpenetration, structural transformations, properties, and applications.

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“…(iv) CPs involving triazole-thiourea based ligands have not been reported, and there are no Hg(II) complexes with such ligands reported so far, thus increasing interest of the present report. (v) Metal-triazole complexes with Hg(II) ions have also been rarely reported. , (vi) Recently, we have found that for a given complex, the substituents on the ligand and complex counteranions are important components for modulating the luminescent properties of 1,2,4-triazole complexes . We therefore anticipate that the current triazole-thiourea ligands are potential candidates for the detection of Hg by the formation of luminescent complexes, which is environmentally relevant as mercury and its derivatives are known to be highly toxic pollutants. − …”

Section: Introductionmentioning

confidence: 99%

Exploring “Triazole-Thiourea” Based Ligands for the Self-Assembly of Photoluminescent Hg(II) Coordination Compounds

Benaissa

Adarsh

Robeyns

et al. 2021

Crystal Growth & Design

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This study represents the first explorative investigation on the supramolecular structural diversity in Hg(II) coordination chemistry with triazole-thiourea ligands leading to a variety of mononuclear, binuclear, and coordination polymers: {[Hg(L1)2(L1 – )2]} (1), {[Hg2(L1)2(μ2-I)2I2]·DMSO} (2), {[Hg(L2)(μ2-I)I]·MeOH}∝ (3), {[Hg2(μ-L3 –)4]}∝ (4), {[HgCl(L4 –)L4]·MeOH} (5), {[Hg2(L4)2(μ2-I)2(I)2]·2MeOH} (6), {[Hg2(μ2-L5 – )4]}∝ (7), {[Hg2(μ2-Cl)2(L6 – )2(L6)2]} (8), {[Hg2(μ2-Br)2(L6 – )2(L6)2]} (9), and {[Hg2(μ2-I)2(L6 –)2(L6)2]} (10). A reaction mechanism was suggested for the unexpected ligand rearrangement occurring in {[Hg2I3(μ3-L5′)]}∝ (11). The ligands were fully characterized including by X-ray crystallography and computational means. This includes six new triazole-thiourea based ligands, namely, 1-R-3-(4H-1,2,4-triazol-4-yl)thiourea (where R = methyl (L1), ethyl (L2), propyl (L3), isopropyl (L4), and its polymorph (L4-poly), allyl (L5), ethyl acetate (L6), and its solvate (L6_MeOH)). Under UV light excitation, 7, 10, and 11 exhibit visible photoluminescence of wide origin, ranging from ligand-centered (LC) fluorescence combined with organic-ligand-to-metal charge transfer (LMCT) emissive states in 7 and 10, up to halide-to-metal charge transfer (XMCT) combined with halide-to-ligand charge transfer (XLCT) emissive states in 11. The variable emission mechanisms in the obtained coordination polymers were elucidated by experimental proofs confronted with theoretical calculations of the electronic densities of states, proving that Hg(II) halide coordination polymers involving flexible 1,2,4-triazole-based ligands form a promising class of luminescent molecular materials.

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Syntheses, Crystal Structures, Luminescent Properties, and Electrochemical Synthesis of Group 12 Element Coordination Polymers with 4-Substituted 1,2,4-Triazole Ligands

Cited by 22 publications

References 64 publications

Syntheses and structures of three macrocyclic supramolecular complexes and one Zn^II-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand

Syntheses and structures of three macrocyclic supramolecular complexes and one Zn^II-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand

Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications

Exploring “Triazole-Thiourea” Based Ligands for the Self-Assembly of Photoluminescent Hg(II) Coordination Compounds

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Syntheses, Crystal Structures, Luminescent Properties, and Electrochemical Synthesis of Group 12 Element Coordination Polymers with 4-Substituted 1,2,4-Triazole Ligands

Cited by 22 publications

References 64 publications

Syntheses and structures of three macrocyclic supramolecular complexes and one ZnII-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand

Syntheses and structures of three macrocyclic supramolecular complexes and one ZnII-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand

Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications

Exploring “Triazole-Thiourea” Based Ligands for the Self-Assembly of Photoluminescent Hg(II) Coordination Compounds

Contact Info

Product

Resources

About

Syntheses and structures of three macrocyclic supramolecular complexes and one Zn^II-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand

Syntheses and structures of three macrocyclic supramolecular complexes and one Zn^II-containing coordination polymer generated from a semi-rigid multidentate N-containing ligand