Local coordination of Co2+ and Ni2+ cations in polyacrylate matrices

Трофимова, Н. Н.; Zubavichus, Ya. V.; Titova, O. I.; Karpyuk, E. A.; Иванов, В. А.; Pomogailo, A. D.; Slovokhotov, Yu.L.

doi:10.3103/s1062873813090463

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…From the second derivative of the spectra, also shown in the figure, two resonances at 8328.9 and 8333.1 eV can be discerned. The first band, with very low intensity, was readily attributed to the symmetry forbidden Ni 1s → σ*S-Ni transition, according to previous studies on nickel (II) salts and complexes, that assigned a pre-edge low-intensity resonance to a Ni 1s → Ni 3d transition (from a Ni 1s atomic orbital to unoccupied antibonding orbitals with Ni 3d character) [64,65].…”

Section: X-ray Absorption Near Edge Structure (Xanes) Spectroscopymentioning

confidence: 60%

“…The second and most intense band, at 8332.6 eV, should arise from an allowed Ni 1s → Ni 4p transition, referred as "white line" in the literature [64,65]. This transition was tentatively assigned to a promotion of a Ni 1s electron to LUMO + 4, which is predicted with an important contribution of Ni 4p atomic orbitals, combined with S 3p orbitals.…”

Section: X-ray Absorption Near Edge Structure (Xanes) Spectroscopymentioning

confidence: 97%

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Electronic structure determination using an assembly of conventional and synchrotron techniques: The case of a xanthate complex

Juncal

Ávila

Asensio

et al. 2017

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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The electronic properties of the coordination complex nickel (II) bis-n-propylxanthate, Ni(CH(CH)OC(S)S), were studied by a combination of complementary experimental (both laboratory and synchrotron based techniques) and theoretical methods. Energy differences between HOMOs and LUMOs were determined from UV-visible spectroscopy. The assignment of the transitions were performed with the aid of TD-DFT calculations and based in symmetry considerations. The analysis of the Raman excitation profiles of selected vibrational modes of the complex, taken in resonance with a particular electronic transition, was found to reinforce the electronic assignment. Experimental binding energies of inner and core electrons were determined by PES measurements. Ni K-edge, S K-edge, Ni L-edge, O K-edge and C K-edge XANES spectra were interpreted in terms of the promotion of core electrons to unoccupied electronic levels. An experimental quantitative molecular orbital diagram was constructed using the information extracted from the different techniques.

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Section: X-ray Absorption Near Edge Structure (Xanes) Spectroscopymentioning

confidence: 60%

Section: X-ray Absorption Near Edge Structure (Xanes) Spectroscopymentioning

confidence: 97%

Electronic structure determination using an assembly of conventional and synchrotron techniques: The case of a xanthate complex

Juncal

Ávila

Asensio

et al. 2017

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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show abstract

“…In this regard, the only study was reported by Trofimova et al, who used two types of polymer matrices: (i) cross‐linked polymethacrylate and (ii) products of thermal polymerization of low molecular acrylamide complexes. Synchrotron XAFS and EXAFS spectroscopy measurements at the K‐edges of Ni and Co were performed by them.…”

Section: Introductionmentioning

confidence: 99%

Probing local structures in (Ni/Co)‐codoped ZnO/PVDF composite flexible and freestanding films by using XAS and XPS studies

et al. 2018

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Extended X‐ray absorption fine‐structure and X‐ray absorption near‐edge structure studies have been performed on five Ni/Co‐codoped ZnO/polyvinylidene fluoride composite flexible and freestanding films to probe the local structure surrounding the Zn, Co, and Ni sites. X‐ray photoelectron spectroscopy studies are also performed for throwing insight in charge states of Co and Ni being incorporated. X‐ray absorption near‐edge structure studies confirmed the incorporation of Co atoms at tetrahedral sites of the wurtzite host matrix. They acted as substitutional impurities without forming any detectable impurity phase or cobalt clusters.

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Complex Formation of Divalent Cations with Carboxylic Acid Resins as a Factor Determining Different Stationary States of Their Swelling

Karpyuk

Titova

Пастухов

et al. 2016

Solvent Extraction and Ion Exchange

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Local coordination of Co2+ and Ni2+ cations in polyacrylate matrices

Cited by 3 publications

References 8 publications

Electronic structure determination using an assembly of conventional and synchrotron techniques: The case of a xanthate complex

Electronic structure determination using an assembly of conventional and synchrotron techniques: The case of a xanthate complex

Probing local structures in (Ni/Co)‐codoped ZnO/PVDF composite flexible and freestanding films by using XAS and XPS studies

Complex Formation of Divalent Cations with Carboxylic Acid Resins as a Factor Determining Different Stationary States of Their Swelling

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