Spectroscopy and kinetics of intermediates in photochemistry of xanthate Ni(S2COEt)2 complex in CCl4

Mikheylis, Aleksander V.; Grivin, Vjacheslav P.; Plyusnin, Victor F.

doi:10.1016/j.jphotochem.2022.114260

Cited by 3 publications

(2 citation statements)

References 47 publications

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“…The complex is highly soluble in chloroform, and the absorption spectrum of Ni xanthate showed multiple absorption bands with peak maxima at 333, 416, and 477 nm (Figure S10). The absorption spectrum is in good agreement with previous reports, and the absorption bands are assigned to ligand-to-metal charge transfer transitions. − According to the literature, the absorption bands between 400 and 500 nm of Ni xanthate are assigned to Sσ → dσ* and S 1p → dσ*, and the most intense absorption band is assigned to Sσ → dσ* . When a few drops of TOP were added to the solution, the color of the solution changed from greenish yellow to reddish brown, and the peaks in the range of 400–500 nm disappeared.…”

Section: Resultssupporting

confidence: 89%

Chalcogen-Based Precursors for Transition Metal (Co, Ni) Phosphides: (Di)chalcogenide-to-Phosphide Transformation via Chemical Extraction of Chalcogenides

Khan,

Shombe,

Khoza

et al. 2024

Inorg. Chem.

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The chemical properties of polymorphic compounds are highly dependent on their stoichiometry and atomic arrangements, making certain phases technologically more important. Selective development of these phases is challenging. This study introduces a method where chalcogenide atoms from metal chalcogenides are chemically extracted by trioctylphosphine (TOP) and substituted with phosphide. Using this approach, dithiocarbamate/xanthate complexes of cobalt and nickel were employed for the selective synthesis of pure metal sulfides or phosphides. Optimization yielded either sulfur-deficient phases (Ni 3 S 2 , Co 9 S 8 ) or a complete transformation to phosphides (Ni 2 P, CoP). Likewise, for the first time, selenobenzoate complexes of Ni and Co were used for the synthesis of transition metal diselenides (NiSe 2 , CoSe 2 ), which could then be converted to metal phosphides (Ni 2 P, Co 2 P). The synthesis used solution-phase thermal decomposition with various precursors, surfactants, and temperatures. With TOP, different phases of metal chalcogenides, metal phosphides, and mixed metal phosphide nanomaterials (NiS, Ni 3 S 2 , Co 9 S 8 , NiSe 2 , CoSe 2 , Ni 2 P, Ni 5 P 4 , Co 2 P, CoP, and Ni 2−x Co x P) were obtained by varying reaction conditions. The formation mechanism of nickel and cobalt phosphide nanoparticles from precursors is proposed, demonstrating that presynthesized metal chalcogenides can be transformed into phosphides, opening a new research avenue for dimensionally controlled metal chalcogenides as templates for metal phosphides.

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Section: Resultssupporting

confidence: 89%

Chalcogen-Based Precursors for Transition Metal (Co, Ni) Phosphides: (Di)chalcogenide-to-Phosphide Transformation via Chemical Extraction of Chalcogenides

Khan,

Shombe,

Khoza

et al. 2024

Inorg. Chem.

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“…They are also utilized as photostabilizers and radiation protectors in polymers. Despite their widespread applications, there is still a need for a comprehensive investigation into the photochemistry and coordination compound behavior of dithiolate complexes in these contexts (Mikheylis et al, 2023), (Gaikwad et al, 2020), (Solovyev et al, 2019), (Jassim et al, 2021) & (Plyusnin et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, Dft, and Biological Assay of New Xanthate Complexes With Nitrogen Bases

Molla-Babaker,

Khalid,

AL-Mukhtar

2024

SJUOZ

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This study introduces a new series of complexes and adducts, denoted by [M(2-PhOEtXant)2.nL], where M represents Mn(II), Fe(II), Co(II), or Ni(II), and the ligand (2-PhOEtXant) is 2-Phenoxyethylxanthate. Varying ligands, including pyridine, piperidine, quinoline, ethylenediamine, and (1,10)-phenanthroline, are explored based on the value of n. Comprehensive characterization, encompassing techniques like 1H-NMR, 13C-NMR, FTIR, AA, CHN analysis, UV-visible spectroscopy, and magnetic property measurements, is employed. Results indicate an octahedral geometry for these complexes, as revealed by effective magnetic moment measurements and electronic spectra analysis. The compounds exhibit noteworthy antioxidant properties, demonstrated through the DPPH radical scavenging method, highlighting their potential as effective antioxidants. Moreover, the complexes display enhanced antibacterial activity against microbial strains compared to free ligands. This research not only delves into the coordination chemistry of these complexes but also underscores their diverse applications. Combining experimental methods with computational insights using Density Functional Theory (DFT) enhances the understanding of dithiolate transition metal complexes. The alignment of computational and experimental outcomes strengthens the reliability of the findings, laying a robust foundation for interdisciplinary exploration. The identified potential applications in optoelectronics, along with the notable antioxidant and antibacterial activities, position these complexes as promising contenders for advanced technologies and scientific applications.

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Photochemical protonation of an azahelicene in 1,2-dichloroethane

Tamozhnikova,

Grivin,

Tsentalovich

et al. 2025

Journal of Photochemistry and Photobiology A: Chemistry

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Spectroscopy and kinetics of intermediates in photochemistry of xanthate Ni(S2COEt)2 complex in CCl4

Cited by 3 publications

References 47 publications

Chalcogen-Based Precursors for Transition Metal (Co, Ni) Phosphides: (Di)chalcogenide-to-Phosphide Transformation via Chemical Extraction of Chalcogenides

Chalcogen-Based Precursors for Transition Metal (Co, Ni) Phosphides: (Di)chalcogenide-to-Phosphide Transformation via Chemical Extraction of Chalcogenides

Synthesis, Characterization, Dft, and Biological Assay of New Xanthate Complexes With Nitrogen Bases

Photochemical protonation of an azahelicene in 1,2-dichloroethane

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