Water-sulfate anion interplay in the evolution of solid state architectures and emission properties of Zn and Cd coordination networks with four azine ligands

Lozovan, Vasile; Kravtsov, Victor Ch.; Coropceanu, Eduard B.; Siminel, Anatolii V.; Куликова, О. В.; Costriucova, Natalia V.; Fonarı, Marina S.

doi:10.1016/j.jssc.2020.121312

Cited by 6 publications

(6 citation statements)

References 69 publications

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“…Structural formulas of the ligands used in the syntheses and the schematic pathway to the reported compounds 1–7 are shown in Figure . The protocols for the preparation of N-donor ligands are given elsewhere. , The synthetic strategy included the stage of a slow deprotonation of dicarboxylic acid in the solvent mixtures. It was observed that water as a solvent blocked several metal-binding sites that resulted in the dinuclear coordination compound 6 .…”

Section: Resultsmentioning

confidence: 99%

“…Recently some of us reported series of azine-based Zn(II)/Cd(II) CPs demonstrating the tunability in crystal structures, inclusion, and ligand-based PL properties. These series included hybrid inorganic−organic 3D coordination networks with sulfato-linkers that afforded rather small pores, 18 while crystals of 1D and 2D CPs with monoand dicarboxylate ligands gave access to the channels filled by the guest molecules, where the guest exchange was registered by the PL spectra. 19 Herein, we aimed to elaborate the conventional synthetic protocols in order to obtain the mixed-ligand MOFs from blends of N,N′-donor azine/azomethine ligands with 4,4′biphenyldicarboxylic acid (H 2 bpdc).…”

Section: ■ Introductionmentioning

confidence: 99%

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Zn(II) and Cd(II) Metal–Organic Frameworks with Azine-Functionalized Pores: Crystal Structures, Photoluminescence, Solvent Exchange, and Molecular Simulations of Carbon Dioxide Binding Sites

Lozovan

Kravtsov

Chumakov

et al. 2023

Crystal Growth & Design

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Four neutral metal–organic frameworks (MOFs) {[Zn(bpdc)(3-bpmhz)]·1.5(dmf)} n MRT-1 (1), {[Zn(bpdc)(3-bpmhz)]·(dmf)·0.5(Py)} n MRT-2 (2), {[Zn(bpdc)(4-bpmhz)](MeOH)·0.5(H2O)} n MRT-3 (3), and {[Cd(bpdc)(bda4bPy)]·2.5(dmf)} n MRT-4 (4) (where MRT stands for the Moldova Research Team), along with a one-dimensional coordination polymer {[Zn(Hbpdc)2(3-bphz)(MeOH)2]·2(dmf)} n (5), a binuclear complex [Cd2(bpdc)2(3-bpmhz)(H2O)6] (6), and a two-dimensional coordination polymer {[Cd(bpdc)(dmso)(H2O)]·0.25(H2bpdc)} n (7), were obtained from blends of 4,4′-biphenyldicarboxylic acid (H2bpdc) with 1,2-bis(1-(pyridin-3-yl)ethylidene)hydrazine (3-bpmhz), 1,2-bis(pyridin-3-ylmethylene)hydrazine (3-bphz), 1,2-bis(1-(pyridin-4-yl)ethylidene)hydrazine (4-bpmhz), or N 1,N 4-bis(pyridin-4-ylmethylene)-benzene-1,4-diamine (bda4bPy). MOFs 1 and 2 are supramolecular isomers. MOF 1 is built on a single tetrahedral Zn(II) atom giving rise to a diamondoid (dia) coordination network with threefold interpenetration. MOFs 2–4 represent a reticular series of primitive cubic (pcu) networks that originated from [M2(CO2)4] (M = Zn and Cd) secondary building units where the metal-carboxylate coordination layers are interlinked by azine double pillars. MOFs 2 and 4 reveal the twofold interpenetrations, while MOF 3 reveals threefold interpenetration. Thermal analysis of MOFs 1–4 carried out in the air and nitrogen atmospheres indicated their thermal stability. MOFs 1 and 4 had the solvent-accessible volumes of 30.1 and 43.7%, respectively. MOF 4 demonstrated an efficient solvent exchange with the nitrobenzene (nb) capture registered by spectroscopic methods and confirmed by X-ray single-crystal studies for the crystal {[Cd(bpdc)(bda4bPy)]·1.5(nb)} n (4-nb). All compounds reveal ligand-based photoluminescence properties registered in the blue and green regions of the visible spectrum for 1–3 and 5–7. The most porous MOF 4 emitted very near to the standard white light and in the orange region when loaded with nb. The symmetry-adapted perturbation theory showed advantages of azine-functionalized pores in the studied MOFs for efficient capture of CO2 molecules on the pores’ walls.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Zn(II) and Cd(II) Metal–Organic Frameworks with Azine-Functionalized Pores: Crystal Structures, Photoluminescence, Solvent Exchange, and Molecular Simulations of Carbon Dioxide Binding Sites

Lozovan

Kravtsov

Chumakov

et al. 2023

Crystal Growth & Design

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“…The possibility for tuning the emission properties of Zn(II) and Cd(II) mixed-ligand coordination networks obtained via interplay of N-pyridine type ligands and dicarboxylic acids has been shown [28]. Otherwise, the ligand-based emission properties have been registered for the coordination networks with the azine chromophores used in these studies [26,[29][30][31][32][33][34][35][36][37][38][39]. In continuation of those studies, herein, the emission properties of as-synthesized coordination polymers 1-8, and de-solvated compounds 1d, 2d, 6d, and 7d are reported.…”

Section: Photoluminescence Propertiesmentioning

confidence: 99%

“…We used the hydrazine sulfate salt by adding sodium carbonate to bring the solution to a neutral pH. The synthetic protocols and spectral details are given in References [29,30].…”

Section: Synthesis Of the Schiff-base Ligandsmentioning

confidence: 99%

From 1D to 2D Cd(II) and Zn(II) Coordination Networks by Replacing Monocarboxylate with Dicarboxylates in Partnership with Azine Ligands: Synthesis, Crystal Structures, Inclusion, and Emission Properties

et al. 2020

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Eight mixed-ligand coordination networks, [Cd(2-aba)(NO3)(4-bphz)3/2]n·n(dmf) (1), [Cd(2-aba)2(4-bphz)]n·0.75n(dmf) (2), [Cd(seb)(4-bphz)]n·n(H2O) (3), [Cd(seb)(4-bpmhz)]n·n(H2O) (4), [Cd(hpa)(3-bphz)]n (5), [Zn(1,3-bdc)(3-bpmhz)]n·n(MeOH) (6), [Cd(1,3-bdc)(3-bpmhz)]n ·0.5n(H2O)·0.5n(EtOH) (7), and [Cd(NO3)2(3-bphz)(bpe)]n·n(3-bphz) (8) were obtained by interplay of cadmium nitrate tetrahydrate or zinc nitrate hexahydrate with 2-aminobenzenecarboxylic acid (H(2-aba)), three dicarboxylic acids, sebacic (decanedioic acid, H2seb), homophthalic (2-(carboxymethyl)benzoic acid, H2hpa), isophthalic (1,3-benzenedicarboxylic acid, H2(1,3-bdc)) acids, bis(4-pyridyl)ethane (bpe) and with four azine ligands, 1,2-bis(pyridin-4-ylmethylene)hydrazine (4-bphz), 1,2-bis(1-(pyridin-4-yl)ethylidene) hydrazine (4-bpmhz), 1,2-bis(pyridin-3-ylmethylene)hydrazine (3-bphz), and 1,2-bis(1-(pyridin-3-yl) ethylidene)hydrazine (3-bpmhz). Compounds 1 and 2 are 1D coordination polymers, while compounds 3–8 are 2D coordination polymers. All compounds were characterized by spectroscopic and X-ray diffraction methods of analysis. The solvent uptakes and stabilities to the guest evacuation were studied and compared for 1D and 2D coordination networks. The de-solvated forms revealed a significant increase of emission in comparison with the as-synthesized crystals.

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“…Condensation of different organic molecules and obtaining Schiff bases allowed the synthesis of coordination compounds with a special composition and molecular architecture, which manifest various useful properties such as luminescence, absorption of small molecules etc. [6][7][8][9]. The theoretical study of Schiff bases with tautomeric forms was previously carried out in a series of papers [10,11].…”

Section: Introductionmentioning

confidence: 99%

DFT study of condensation mechanisms of 4-pyridinecarboxaldehyde with o-, m-, p-aminobenzoic acids

Arsene

Coropceanu

Purcel

2022

Acta et commentationes Şt. Exacte Naturii

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It was theoretically studied the mechanism of the condensation reaction of 4-pyridinecarbo\-xaldehyde with o-, m- and p-aminobenzoic acids. Theoretical calculations represent a primary advantage in studying these reactions, along with the determination of a wide range of molecular properties. The studied reactions take place in two stages, each stage is accompanied by a transition state and for each stage it is calculated the activation energy. Thermodynamically speaking, all reactions are endothermic and the most convenient from an energetic point of view is the reaction for obtaining 4-(pyridine-3-yl-methylene amino) benzoic acid in methanol with an energy value of 9.98 kcal/mol.

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Water-sulfate anion interplay in the evolution of solid state architectures and emission properties of Zn and Cd coordination networks with four azine ligands

Cited by 6 publications

References 69 publications

Zn(II) and Cd(II) Metal–Organic Frameworks with Azine-Functionalized Pores: Crystal Structures, Photoluminescence, Solvent Exchange, and Molecular Simulations of Carbon Dioxide Binding Sites

Zn(II) and Cd(II) Metal–Organic Frameworks with Azine-Functionalized Pores: Crystal Structures, Photoluminescence, Solvent Exchange, and Molecular Simulations of Carbon Dioxide Binding Sites

From 1D to 2D Cd(II) and Zn(II) Coordination Networks by Replacing Monocarboxylate with Dicarboxylates in Partnership with Azine Ligands: Synthesis, Crystal Structures, Inclusion, and Emission Properties

DFT study of condensation mechanisms of 4-pyridinecarboxaldehyde with o-, m-, p-aminobenzoic acids

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