Three-dimensional ionic frameworks built up from La (III) and Ce (III) succinates

Rahahlia, N.; Benmerad, Belkacem; Guehria-Laïdoudî, A.; Dahaoui, Slimane; Lecomte, Claude

doi:10.1016/j.molstruc.2006.08.029

Cited by 19 publications

(12 citation statements)

References 27 publications

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“…In the IR spectra of 1 – 3 , strong absorptions at 1638–1624 cm –1 correspond to the asymmetric ν(COO) vibration of the carboxylate group after coordination. The symmetric ν(OCO) vibrations are probably overlapped with the typical peaks (1479–1533 cm –1 ) of the tetrazole and pyridyl (pyrazinyl) groups 15–18. Bands at 3386–3431 cm –1 are caused by the water, including coordinated water and perhaps uncoordinated water as well.…”

Section: Resultsmentioning

confidence: 96%

Three New Coordination Compounds with Neodymium Based on Tetrazole Containing Carboxylic Acid Ligands

Zou

Zhu

et al. 2014

Zeitschrift anorg allge chemie

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Reactions of three tetrazole containing carboxylic acid ligands, namely, Hpztza, Htzpya, and Hpytza [Hpztza = 5-(2-pyrazinyl)tetrazole-2-acetic acid, Htzpya = 3-(5-tetrazolyl)pyridine-1-acetic acid, Hpytza = 5-(3-pyridyl)tetrazole-2-acetic acid] with NdCl 3 ·6H 2 O under hydrothermal conditions, afforded the complexes [Nd(pztza) 2 (H 2 O) 6 ]· pztza·3H 2 O (1), [Nd 2 (tzpya) 2 (H 2 O) 12 ]Cl 4 ·2H 2 O (2), and [Nd(pytza) 2 Cl(H 2 O) 2 ] (3). The compounds were structurally charac- 2226terized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. X-ray diffraction analyses revealed that compound 1 displays a mononuclear structure, 2 shows a dinuclear structure, and 3 features a 1D polymeric chain structure via pytza as linker. Furthermore, the luminescent properties investigated at room temperature in the solid state show that compound 2 has an obvious decrease in its luminescence, when compared to the ligand.

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Section: Resultsmentioning

confidence: 96%

Three New Coordination Compounds with Neodymium Based on Tetrazole Containing Carboxylic Acid Ligands

Zou

Zhu

et al. 2014

Zeitschrift anorg allge chemie

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“…Moreover, the partially deprotonated ligand appeared to depend roughly on the metal ligand ratio and probably on reaction time [18,20,25,37]. As shown in a comparative study in the series of α,ω-aliphatic dicarboxylic acids [16,17,18,19,20,21,22,23,24,25,26,37], the optimal hydrogen bonding patterns should be more determining in the deprotonation of these acids than their corresponding pKa. The nature of alkali salts used as starting materials has probably a great effect on the formation of this kind of material, through the pH value of the mixture [38,39,40,41,42,43,44].…”

Section: Resultsmentioning

confidence: 99%

“…[15]. Within a systematic investigation concerning structure-properties relationships in dicarboxylate complexes [16,17,18,19,20,21,22,23,24,25,26,27], and especially metallic oxalates, we have focused on heterometallic connectors using alkali and transition metals, but we have obtained as by-products, also homonuclear compounds. …”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structure and Thermal Behavior of Oxalato-Bridged Rb+ and H3O+ Extended Frameworks with Different Dimensionalities

et al. 2010

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Correlative studies of three oxalato-bridged polymers, obtained under hydrothermal conditions for the two isostructural compounds {Rb(HC2O4)(H2C2O4)(H2O)2}∞1, 1, {H3O(HC2O4)(H2C2O4).2H2O}∞1, 2, and by conventional synthetic method for {Rb(HC2O4)}∞3, 3, allowed the identification of H-bond patterns and structural dimensionality. Ferroïc domain structures are confirmed by electric measurements performed on 3. Although 2 resembles one oxalic acid sesquihydrate, its structure determination doesn’t display any kind of disorder and leads to recognition of a supramolecular network identical to hybrid s-block series, where moreover, unusual H3O+ and NH4+ similarity is brought out. Thermal behaviors show that 1D frameworks with extended H-bonds, whether with or without a metal center, have the same stability. Inversely, despite the dimensionalities, the same metallic intermediate and final compounds are obtained for the two Rb+ ferroïc materials.

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“…The LnSuc system has been extensively studied in the literature, and compounds with structural and stoichiometric diversity can be found. [19][20][21][22][23][24][25] For the synthesis of the LnSuc (Ln = Pr, Nd, Sm, Gd, Dy, Er and Tm) systems, the methodology of hydrothermal synthesis was used resulting in single crystals with yield ranging from 68 (for PrSuc) to 39% (for DySuc). Figure 1 shows the optical microscopy images of some crystals obtained in the synthesis.…”

Section: Resultsmentioning

confidence: 99%

“…All results are similar to the compounds without the presence of AC. [19][20][21][22][23][24][25][26] For the composite containing Dy, Er and Tm, TGA are shown in Figure 7. Again, the initial loss mass until 70 o C was observed, due to the adsorbed species.…”

Section: Characterization Of Lnsuc@ac Compositesmentioning

confidence: 99%

New Composites CP@AC Based on Lanthanide Succinates

Santos¹,

Oliveira²,

Silva³

et al. 2018

J. Braz. Chem. Soc.

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Composites derived from coordination polymers have been gathering great attention due to their singular properties and applications, especially catalysis and adsorption. In this work, seven new composites based on activated carbon (AC) and lanthanide-succinates (LnSuc; Ln = Pr, Nd, Sm, Gd, Dy, Er and Tm, and Suc = succinate) 3D-coordination polymers were obtained using hydrothermal reactions. Coordination polymers in LnSuc@AC composites (Ln = Pr, Nd, Sm, Gd) crystallize in monoclinic system and C2/c space group. However, the LnSuc in composites with Dy, Er and Tm have different crystal structures, due to the influence of the carbon matrix in the reaction. The systems were also characterized by Fourier transform infrared (FTIR) and thermogravimetric (TGA) analysis, and the results are in agreement with the X-ray powder diffraction (XRPD) data. The scanning electron microscopy (SEM) images confirm the crystallization of the compounds inside the pores of the carbon material. Photophysical properties of the NdSuc@AC and DySuc@AC were also investigated.

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Three-dimensional ionic frameworks built up from La (III) and Ce (III) succinates

Cited by 19 publications

References 27 publications

Three New Coordination Compounds with Neodymium Based on Tetrazole Containing Carboxylic Acid Ligands

Three New Coordination Compounds with Neodymium Based on Tetrazole Containing Carboxylic Acid Ligands

Synthesis, Structure and Thermal Behavior of Oxalato-Bridged Rb+ and H3O+ Extended Frameworks with Different Dimensionalities

New Composites CP@AC Based on Lanthanide Succinates

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