Novel Co5 and Ni4 Metal Complexes and Ferromagnets by the Combination of 2-Pyridyl Oximes with Polycarboxylic Ligands

Dimakopoulou, Foteini; Efthymiou, Costantinos G.; O’Malley, Ciarán; Kourtellaris, Andreas; Moushi, Eleni E.; Tasiopoulos, Anastasios J.; Perlepes, Spyros P.; McArdle, Patrick; Costa-Villén, Ernesto; Mayans, Júlia; Papatriantafyllopoulou, Constantina

doi:10.3390/molecules27154701

Cited by 3 publications

(1 citation statement)

References 94 publications

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“…Polynuclear metal complexes are hybrid metal-organic compounds where the organic or inorganic ligand holds the metal ions 4 . In particular, polynuclear metal compounds often exhibit unique structural features and combine physical properties such as magnetism and luminescence for drug discovery and catalyzing new product development 5 . Transition metals such as Co 2+ , Mn 3+ and Fe 3+ with polynuclear homometallic and heterometallic are good candidates for constructing single magnetic molecules (SMMs) 6 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and crystal structure of a dodeca-nuclear cobalt (II)cube-octahedron

Elmehdawi

2023

Mediterr.J.Chem.,

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The new cobalt (II) complex, [Co12 (cpip)12(H2O)12].18.56H2O where H2cpip = 2-(carboxy-phenyl) amino-propanoic acid, was isolated as pink-like prism crystals from the reaction of Co(NO3)2.6H2O and H2cpip in an ethanolic solution. The complex was characterized by Fourier Transform Infrared Spectroscopy (FTIR) and X-ray single-crystal diffraction. The symmetric unit of the title complex contains twelve cobalt atoms arranged in a cube-octahedron. Each divalent cation of cobalt is iso-octahedrally coordinated to four oxygen atoms of two cpip2- ligands in the equatorial plane. The axial plane is occupied by an amino nitrogen atom of one of the cpip2- ligands and an oxygen atom of a water molecule. The lattice water molecule in the metallocycle cavity involved OHO hydrogen bonding with the coordinated water molecules.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and crystal structure of a dodeca-nuclear cobalt (II)cube-octahedron

Elmehdawi

2023

Mediterr.J.Chem.,

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Synthesis, characterization, and bioactivity of Cu(II), Fe(II), Co(II), Ni(II), and Mn(II) complexes with benzilmonoximethiocarbohydrazide-O-methoxybenzaldehyde: experimental and computational insights

Singh,

Bagul,

Tufail

et al. 2024

Biometals

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Aminopolycarboxylate zinc(II) complexes with 1,10-phenanthroline and 2,2′-bipyridyl: kinetic studies in the surfactants solutions systems

Malinowski,

Drzeżdżon,

Jacewicz

2023

Reac Kinet Mech Cat

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Aminopolycarboxylate zinc(II) complexes with 1,10-phenanthroline and 2,2′-bipyridyl {[Zn(IDA)(H2O)2], [Zn(IDA)(bipy)(H2O)]·2H2O and [Zn(IDA)(phen)(H2O)]·2H2O} were synthesized. In order to confirm the composition and purity of the synthesized complex compounds, elemental analysis was used. Next, the kinetics of the substitution reaction of two water molecules in the zinc(II) iminodiacetate complex for 1,10-phenanthroline and 2,2′-bipyridyl in two surfactant solvents: CTAB and Triton X-100 were investigated. The kinetic studies were carried out using the stopped flow method. The kinetic research were carried out at 3 different temperatures: 288.15, 293.15 and 298.15 K and at different molar concentrations of the complex compound [Zn(IDA)(H2O)2]: 1 mM; 0.75 mM, 0.5 mM and 0.25 mM and at a constant molar concentration of ligands: i.e. 1,10-phenanthroline and 2,2′-bipyridyl, were 0.05 mM. Changes in absorbance during the kinetic run of the tested reactions were measured at a wavelength of 260 nm. Thanks to the conducted kinetic studies, the order of the reaction was determined, and the observable rate constants of the reaction rates of the substitution of two aqua molecules into the N-donor ligand were determined by the stopped—flow method using the Glint program. In the next step the thermodynamic parameters of complexes: {[Zn(IDA)(H2O)2], [Zn(IDA)(bipy)(H2O)]·2H2O and [Zn(IDA)(phen)(H2O)]·2H2O} in aqueous solutions by use potentiometric titrations were determined. The Hyperquad2018 program was used for determining of stability constants. In addition, the stoichiometry of complexes of zinc(II) with N-heterocyclic ligands in aqueous solutions was determined using the conductometric titrations.

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Novel Co5 and Ni4 Metal Complexes and Ferromagnets by the Combination of 2-Pyridyl Oximes with Polycarboxylic Ligands

Cited by 3 publications

References 94 publications

Synthesis, characterization and crystal structure of a dodeca-nuclear cobalt (II)cube-octahedron

Synthesis, characterization and crystal structure of a dodeca-nuclear cobalt (II)cube-octahedron

Synthesis, characterization, and bioactivity of Cu(II), Fe(II), Co(II), Ni(II), and Mn(II) complexes with benzilmonoximethiocarbohydrazide-O-methoxybenzaldehyde: experimental and computational insights

Aminopolycarboxylate zinc(II) complexes with 1,10-phenanthroline and 2,2′-bipyridyl: kinetic studies in the surfactants solutions systems

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