Lanthanide-Organic Frameworks with Flexible Triacid Ligand: Structural Variation Under Different Reaction Conditions

Zhang, Zhenghua; Meng, W.; Okamura, Taka‐aki; Kong, Lingyan; Sun, Wei‐Yin; Ueyama, Norikazu

doi:10.1080/10610270600584080

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…Scheme 1 Possible coordination modes of bta ligand in the lanthanide(III) complexes [18][19][20][21] of reaction have a great impact on the MOFs structure [20]. The whole series of lanthanide(III) complexes was prepared under exactly the same conditions: in the reaction of lanthanide(III) chlorides (pH 5.3-5.8) and the ammonium salt of H 3 bta (pH & 5.5) in the 0.01 M solutions at 40°C at the molar ratio 1:1.…”

Section: Experimental Preparation Of the Lanthanide(iii) Complexesmentioning

confidence: 99%

“…Recently, some interest has arisen in the construction of lanthanide MOFs with flexible organic ligands for example: Tb(III) and Ho(III) phenylene-1,2-diacetates [15], Sm(III), Eu(III), Tb(III), Ho(III) phenylene-1,3-diacetates [16], lanthanide phenylene-1,4-diacetates [17] and benzene-1,3,5-triacetates (Scheme 1) [18][19][20][21] owing to their flexibility and conformational freedoms. The use of lanthanide ions in that construction is due to the high coordination number (8 or 9) as well as special properties of the lanthanide ions.…”

Section: Introductionmentioning

confidence: 99%

“…Taking into consideration the high but changing coordination number of Ln 3? ions, reducing of their radius, diversity of carboxylate group-Ln 3? binding mode [22] as well as the flexible character of bta ligand [23] which can adopt different conformations in the process of MOFs formation proceeded under the stable conditions of synthesis. The conditions of synthesis have great impact on the structure of MOFs [20]. The aim of this paper was also to determine the influence of temperature increase on the stability of crystalline networks of the complexes.…”

Section: Introductionmentioning

confidence: 99%

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Thermal and spectroscopic (IR, XPS) properties of lanthanide(III) benzene-1,3,5-triacetate complexes

Sienkiewicz-Gromiuk

Rusinek

Kurach

et al. 2016

J Therm Anal Calorim

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The metal-organic frameworks of the formula Ln(bta)ÁnH 2 O where n = 3, 4, 5 or 6; bta = benzene-1,3,5triacetate ion: [C 9 H 9 (COO) 3 ] 3-; Ln = La(III), Nd(III), Eu(III), Tb(III), Ho(III), Tm(III), Lu(III) were synthesized by the reaction of LnCl 3 ÁxH 2 O with ammonium salt of H 3 bta acid in water solution. Insoluble water compounds crystallize in the monoclinic or triclinic crystal system, and they are stable up to 30°C. When heated, they decompose up to 160-200°C in two stages to stable anhydrous compounds. The dehydrated compounds Ln(bta) are still crystalline and stable up to about 350°C. When heated above 350°C, they undergo decomposition where the intermediate products are Ln 2 O 2 CO 3 or Tb 4 O 6 CO 3 and the residues are: Ln 2 O 3 or Tb 4 O 7. The interpretation of IR spectra of title compounds was made taking into consideration the experimental and theoretical wavenumbers obtained for H 3 bta specie. The XPS spectra of H 3 bta and its complexes were recorded. The way of metal-carboxylate group of ligand coordination was discussed. This work presents the results of the XPS analyses, which allowed to determine the binding energies (E b) for the main lines of Ln3d, Ln4d, Ln5p, C1s, O1s spectra, spin-orbital splitting and full width at half maximum complexes.

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Section: Experimental Preparation Of the Lanthanide(iii) Complexesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermal and spectroscopic (IR, XPS) properties of lanthanide(III) benzene-1,3,5-triacetate complexes

Sienkiewicz-Gromiuk

Rusinek

Kurach

et al. 2016

J Therm Anal Calorim

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“…The materials are 3-D coordination frameworks displaying a rare (4,5)-connected topology and photoluminescent properties [15]. Others used related organic ligands to prepare lanthanide-organic frameworks [16][17][18][19][20][21][22], just to list a few. For example, Li reported a 2-D extended dysprosium(III) based where oxygen-bridged dimers are connected by 4-pyridine-3,5-dicarboxylate ligands and the layers are linked by carboxylate anions [21].…”

mentioning

confidence: 99%

A 3-D lanthanum-organic framework containing double chains: La2[NC5H3(CO2)2]3·3H2O

Tran

Chu

Oliver

et al. 2010

Inorganic Chemistry Communications

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The Construction of Open Gd^III Metal–Organic Frameworks Based on Methanetriacetic Acid: New Objects with an Old Ligand

Cañadillas‐Delgado

Martı́n

Fabelo

et al. 2010

Chemistry A European J

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The preparation, X‐ray crystallography and magnetic investigation of the first examples of methanetriacetate (mta)‐containing lanthanide(III) complexes of formulae [Gd(mta)(H2O)3]n⋅4 n H2O (1) [Gd(mta)(H2O)3]n⋅2 n H2O (2) and [Gd2(mta)2(H2O)2]n⋅2 n H2O (3) are described herein. This tripodal ligand promotes the formation of 63 networks; thus 1 consists of a honeycomb structure, whereas in 2 two of these layers are condensed to form a rare five‐connected two‐dimensional (4862) network. Compound 3 can be seen as an aggregation of 63 layers leading to a three‐dimensional (6,6)‐connected binodal (41263)(4966)‐nia net, in which the gadolinium(III) ions and the mta ligands act as octahedral and as trigonal prismatic nodes, respectively. The magnetic properties of 1–3 were investigated in the temperature range 1.9–300 K. A close fit to the Curie law (1) and weak either antiferro‐ [J=−0.0063(1) cm−1 (2)] or ferromagnetic [J=+0.0264(6) cm−1 (3)] interactions between the GdIII ions are observed; the different exchange pathways involved [extended tris‐bidentate mta (1) and μ‐O(1);κ2O(1),O(2) (2 and 3) plus single syn–syn carboxylate‐mta (3)] accounting for these magnetic features. The nature and magnitude of the magnetic interactions, between the GdIII ions in 1–3, agree with the small amount of data existing in the literature for these kind of bridges.

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Lanthanide-Organic Frameworks with Flexible Triacid Ligand: Structural Variation Under Different Reaction Conditions

Cited by 7 publications

References 24 publications

Thermal and spectroscopic (IR, XPS) properties of lanthanide(III) benzene-1,3,5-triacetate complexes

Thermal and spectroscopic (IR, XPS) properties of lanthanide(III) benzene-1,3,5-triacetate complexes

A 3-D lanthanum-organic framework containing double chains: La2[NC5H3(CO2)2]3·3H2O

The Construction of Open Gd^III Metal–Organic Frameworks Based on Methanetriacetic Acid: New Objects with an Old Ligand

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Lanthanide-Organic Frameworks with Flexible Triacid Ligand: Structural Variation Under Different Reaction Conditions

Cited by 7 publications

References 24 publications

Thermal and spectroscopic (IR, XPS) properties of lanthanide(III) benzene-1,3,5-triacetate complexes

Thermal and spectroscopic (IR, XPS) properties of lanthanide(III) benzene-1,3,5-triacetate complexes

A 3-D lanthanum-organic framework containing double chains: La2[NC5H3(CO2)2]3·3H2O

The Construction of Open GdIII Metal–Organic Frameworks Based on Methanetriacetic Acid: New Objects with an Old Ligand

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Product

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The Construction of Open Gd^III Metal–Organic Frameworks Based on Methanetriacetic Acid: New Objects with an Old Ligand