New complexes of lanthanide Ln(III), (Ln=La, Sm, Gd, Er) with Schiff bases derived from 2-furaldehyde and phenylenediamines

Pui, Aurel; Măluțan, Teodor; Tǎtaru, Lucia; Măluţan, Corina; Humelnicu, Doina; Cârjă, Gabriela

doi:10.1016/j.poly.2011.05.029

Cited by 32 publications

(10 citation statements)

References 22 publications

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“…Due to the lone pair of the sp 2 nitrogen in the azomethine group, this organic class of compounds has a potential in coordination chemistry as ligands with high design flexibility and high functionality [1,2]. Transition metal complexes with Schiff bases have been of significant interest due to their antibacterial and antifungal activities [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Infrared spectra were recorded for powder samples of the complexes using a Bruker Alpha FT-IR; peaks are reported in cm -1 . 1 H NMR (600 MHz) spectra were recorded using a Bruker Avance III HD NMR spectrometer and 31 P NMR spectra (121 MHz) were recorded using a Varian Mercury-300 FT NMR spectrometer. The spectra are referenced to residual chloroform (7.26, 1 H) or external H 3 PO 4 (0.0 ppm, 31 P).…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Novel Pyridyl-Based Schiff Base and Its Coordination Behaviour with Ruthenium(II) and Zinc(II)

Al-Rashdi¹,

Eltayeb²,

Al-Khathami³

et al. 2017

Asian J. Chem.

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High reactivity of the Schiff base product of p-toluidine with pyridine-2-carboxaldehyde was observed, leading to methyl group isomerization (immigration) to ortho-position followed by the dimerization reaction to form biphenyl system. This compound was identified and characterized using IR, ESI MS and NMR spectroscopic methods and its structure confirmed by XRD single crystal. The coordination behaviour of the Schiff base was examined using ruthenium(II) and zinc(II). Two metal complexes were only isolated and identified by Xray crystallography for ruthenium(II) and zinc(II). The coordination behaviour of both metals differs significantly, although both of them promote the oxidation reaction on one of the azomethine bond.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Novel Pyridyl-Based Schiff Base and Its Coordination Behaviour with Ruthenium(II) and Zinc(II)

Al-Rashdi¹,

Eltayeb²,

Al-Khathami³

et al. 2017

Asian J. Chem.

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“…Two bands are observed around of 585 cm −1 and around 450 cm −1 for all Co x Mn y Zn y Fe 2 O 4 samples. These two vibrations bands correspond to the intrinsic lattice vibrations of octahedral and tetrahedral coordination compounds in the spinel structure, respectively [27]. The different frequency between the characteristic vibrations may be attributed to the long band length of oxygen-metal ions in the octahedral sites and shorter band length of oxygen-metal ions in the tetrahedral sites.…”

Section: Ft-ir Spectroscope Studiesmentioning

confidence: 95%

Synthesis, investigation on structural and electrical properties of cobalt doped Mn–Zn ferrite nanocrystalline powders

Bhuvaneswari¹,

Sendhilnathan

Kumar³

et al. 2016

Materials Science-Poland

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Synthesis of Co x Mn y Zn y Fe 2 O 4 (x = 0.1, 0.5, 0.9 and y = 0.45, 0.25, 0.05) nanocrystalline powders was done by chemical co-precipitation method. The crystal structure was determined by using X-ray diffraction (XRD) studies. The crystallite size and lattice parameters were calculated from the XRD data. The XRD results revealed that the crystallite size of the nanocrystalline powder was found to decrease from 37 nm to 28 nm with the substitution of cobalt. The effect of cobalt ions on the crystallization process, the lattice parameters and electrical properties of Mn-Zn ferrites has been also investigated. The AC conductivity increased with an increase in frequency but it decreased with an increase in cobalt content. The complex impedance analysis of the data showed that the resistive and capacitive properties of the Co-Mn-Zn ferrite are predominant due to the fact that the processes are associated with the grains and grain boundaries. The dielectric constant and dielectric loss dependence on doping level and frequency at room temperature were also studied.

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“…Vital role of gadolinium complexes in medical chemistry has motivated researchers for the development of new gadolinium specific receptors . Furfural based organic compounds are found to interact with gadolinium metal ion . The utilization of such type of organic framework as hosts is key to design highly sensitive and selective receptor for gadolinium ion.…”

Section: Introductionmentioning

confidence: 99%

Design and synthesis of two armed molecular receptor for recognition of Gd³⁺ metal ion and its computational study

Mohan

Modi

Patel

et al. 2018

Applied Organom Chemis

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New receptor Phenylene‐Bis‐Methylfuran‐yl‐2‐Methyele Acetohydrazide (PBMMA) has been synthesized by condensation of hydrazide and 5‐methyl furfural. Synthesized receptor has been fully characterized by IR, 1H NMR, 13C NMR, mass spectroscopic and thermo gravimetric analysis. The receptor PBMMA shows selective recognition potential towards Gd3+ ion when tested with several metal ions such as Na+, K+, Mg2+, Cu2+, Cd2+, Hg2+, Y3+, La3+, Eu3+, Sm3+, Gd3+, Re6+ and Th4+ ion as their sulfates by UV–visible and fluorescence spectroscopic studies. Binding nature of PBMMA with Gd3+ ion was further studied by mass spectroscopic and cyclic voltammetric studies. The stoichiometry of PBMMA‐Gd3+ ion has been established, 1:1 by Benesi‐Hildebrand plot method and method of continuous variation (Job's plot) with association affinity K = 6.491 × 104 M−1. In addition to these, molecular docking, molecular dynamic stimulation and binding energy of complex; through Density Function theory −595.66 kcal/mol has also indication of strong binding. The electron transfer energy of Higher occupied molecular orbital (HOMO) to Lower unoccupied molecular orbital (LUMO) is about 4.186 eV and 295 nm for PBMMA‐Gd3+ Complex.

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New complexes of lanthanide Ln(III), (Ln=La, Sm, Gd, Er) with Schiff bases derived from 2-furaldehyde and phenylenediamines

Cited by 32 publications

References 22 publications

Synthesis of Novel Pyridyl-Based Schiff Base and Its Coordination Behaviour with Ruthenium(II) and Zinc(II)

Synthesis of Novel Pyridyl-Based Schiff Base and Its Coordination Behaviour with Ruthenium(II) and Zinc(II)

Synthesis, investigation on structural and electrical properties of cobalt doped Mn–Zn ferrite nanocrystalline powders

Design and synthesis of two armed molecular receptor for recognition of Gd³⁺ metal ion and its computational study

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New complexes of lanthanide Ln(III), (Ln=La, Sm, Gd, Er) with Schiff bases derived from 2-furaldehyde and phenylenediamines

Cited by 32 publications

References 22 publications

Synthesis of Novel Pyridyl-Based Schiff Base and Its Coordination Behaviour with Ruthenium(II) and Zinc(II)

Synthesis of Novel Pyridyl-Based Schiff Base and Its Coordination Behaviour with Ruthenium(II) and Zinc(II)

Synthesis, investigation on structural and electrical properties of cobalt doped Mn–Zn ferrite nanocrystalline powders

Design and synthesis of two armed molecular receptor for recognition of Gd3+ metal ion and its computational study

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Design and synthesis of two armed molecular receptor for recognition of Gd³⁺ metal ion and its computational study