Effect of N,N′-dimethylformamide solvent on structure and thermal properties of lanthanide(III) complexes with flexible biphenyl-4,4′-dioxydiacetic acid

Głuchowska, Halina; Łyszczek, Renata; Jusza, Anna; Piramidowicz, Ryszard

doi:10.1007/s10973-020-10435-1

Cited by 8 publications

(9 citation statements)

References 43 publications

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“…In the first group of compounds (Pr, Sm, and Eu), stret ing vibrations of carbonyl groups from DMF molecules coordinated to the lanthanide c ter give bands at 1660-1656 cm −1 . For the remaining complexes, their infrared spectra show two well-separated ban at 1668 and 1628 cm −1 ascribed to the ν(C=O) group of non-equivalent DMF molecu [59]. It is reasonable to suggest that DMF molecules are bonded in the struct The presence of DMF molecules in the structures of the complexes is also clearly reflected in the infrared spectra.…”

Section: Infrared Spectra Of Metal Complexesmentioning

confidence: 87%

“…The asymmetric and symmetric bending vibrations (δ) of methyl groups (CH 3 ) appear at 1457 and 1374 cm −1 , respectively. Additionally, the relatively intense bands at 1270 and 1076 cm −1 can be ascribed to the rocking modes ( ) of methyl bands derived from the gem (CH 3 ) 2 N group of DMF [59,60]. Removal of N,N'-dimethylformamide molecules is observed up to about 300 • C (13.7 min).…”

Section: Thermal Analysis In Air and Nitrogen Atmospherementioning

confidence: 93%

“…For the remaining complexes, their infrared spectra show two well-separated bands at 1668 and 1628 cm −1 ascribed to the ν(C=O) group of non-equivalent DMF molecules [59]. It is reasonable to suggest that DMF molecules are bonded in the structure differently.…”

Section: Infrared Spectra Of Metal Complexesmentioning

confidence: 95%

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New Coordination Polymers of Selected Lanthanides with 1,2-Phenylenediacetate Linker: Structures, Thermal and Luminescence Properties

et al. 2021

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Solvothermal reactions of lanthanide (III) salts with 1,2-phenylenediacetic acid in N,N′-dimethylformamide (DMF) solvent lead to the formation of the metal complexes of the general formula Ln2(1,2-pda)3(DMF)2, where Ln(III) = Pr(1), Sm(2), Eu(3), Tb(4), Dy(5), and Er(6), 1,2-pda = [C6H4(CH2COO)2]2−. The compounds were characterized by elemental analysis, powder and single-crystal X-ray diffraction methods, thermal analysis methods (TG-DSC and TG-FTIR), infrared and luminescence spectroscopy. They exhibit structural similarity in the two groups (Pr, Sm, and Eu; Tb, Dy, and Er), which was reflected in their thermal behaviours and spectroscopic properties. Single-crystal X-ray diffraction studies reveal that Sm(2) and Eu(3) complexes form 2D coordination polymers with four crystallographically independent metal centers. Every second lanthanide ion is additionally coordinated by two DMF molecules. The 1,2-phenylenediacetate linker shows different denticity being: penta- and hexadentate while carboxylate groups exhibit bidentate-bridging, bidentate-chelating, and three-dentate bridging-chelating modes. The infrared spectra reflect divergence between these two groups of complexes. The complexes of lighter lanthanides contain in the structure coordinated DMF molecules, while in the structures of heavier complexes, DMF molecules appear in the inner and outer coordination sphere. Both carboxylate groups are deprotonated and engaged in the coordination of metal centers but in different ways in such groups of complexes. In the groups, the thermal decomposition of the isostructural complexes occurs similarly. Pyrolysis of complexes takes place with the formation of such gaseous products as DMF, carbon oxides, ortho-xylene, ethers, water, carboxylic acids, and esters. The complexes of Eu and Tb exhibit characteristic luminescence in the VIS region, while the erbium complex emits NIR wavelength.

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Section: Infrared Spectra Of Metal Complexesmentioning

confidence: 87%

Section: Thermal Analysis In Air and Nitrogen Atmospherementioning

confidence: 93%

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New Coordination Polymers of Selected Lanthanides with 1,2-Phenylenediacetate Linker: Structures, Thermal and Luminescence Properties

et al. 2021

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“…The present study is a continuation of our research on coordination polymers assembled from aromatic polycarboxylic acids [33][34][35][36][37][38]. Recently, our attention has focused on probing biphenyl-4,4'-dioxydiacetic acid (H2L) (Scheme 1) as a flexible linker toward lanthanides and alkali metals [39,40]. This linker offers up to six sites (four carboxylate and two ether) for potential coordination, and possesses good thermal stability and conformational versatility [39][40][41].…”

Section: Introductionmentioning

confidence: 94%

“…Recently, our attention has focused on probing biphenyl-4,4'-dioxydiacetic acid (H 2 L) (Scheme 1) as a flexible linker toward lanthanides and alkali metals [39,40]. This linker offers up to six sites (four carboxylate and two ether) for potential coordination, and possesses good thermal stability and conformational versatility [39][40][41]. It was also postulated that the ionic radius of a metal center might be a main factor that influences the denticity of ligand and dimensionality of the self-assembled coordination polymers.…”

Section: Introductionmentioning

confidence: 99%

Structural and Thermal Investigations of Co(II) and Ni(II) Coordination Polymers Based on biphenyl-4,4′-dioxydiacetate Linker

et al. 2021

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Two coordination polymers, [Co(µ4-L)(H2O)2]n (1) and [Ni(µ-L)(H2O)4]n (2), were solvothermally assembled from the corresponding metal(II) chlorides and biphenyl-4,4-dioxydiacetic acid (H2L) as a flexible dicarboxylate linker. The cobalt(II) compound 1 featured a layer-pillared 3D metal-organic network with a cds topology, while the nickel(II) derivative 2 represented a linear chain 1D coordination polymer with a 2C1 topology. The µ4− and µ-L2− linkers exhibited different denticity and coordination modes in the synthesized compounds, thus contributing to their structural diversity. The dimensionality of 1 and 2 had an influence on their thermal stability and decomposition processes, which were investigated in detail by TG-DSC and TG-FTIR methods. Thermal decomposition products of coordination polymers were also analyzed by PXRD, confirming the formation of Co3O4/CoO and NiO as final materials. The obtained compounds broaden a family of coordination polymers assembled from flexible dicarboxylate linkers.

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Preparation of Eu(III) Complexes Containing Maleopimaric Acid Anhydride with Ultra-narrow and Efficient Fluorescence Emission for High Determination on Gallic Acid in Acetonitrile Solution

Wang

et al. 2022

J Fluoresc

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Effect of N,N′-dimethylformamide solvent on structure and thermal properties of lanthanide(III) complexes with flexible biphenyl-4,4′-dioxydiacetic acid

Cited by 8 publications

References 43 publications

New Coordination Polymers of Selected Lanthanides with 1,2-Phenylenediacetate Linker: Structures, Thermal and Luminescence Properties

New Coordination Polymers of Selected Lanthanides with 1,2-Phenylenediacetate Linker: Structures, Thermal and Luminescence Properties

Structural and Thermal Investigations of Co(II) and Ni(II) Coordination Polymers Based on biphenyl-4,4′-dioxydiacetate Linker

Preparation of Eu(III) Complexes Containing Maleopimaric Acid Anhydride with Ultra-narrow and Efficient Fluorescence Emission for High Determination on Gallic Acid in Acetonitrile Solution

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