4.7 Article

Oxidation of crude palladium powder by a diiodine adduct of (2-PyTe)2 to obtain the novel PdII complex [PdI(TePy-2)(I2TePy-2)2]

Journal

INORGANIC CHEMISTRY COMMUNICATIONS
Volume 118, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.inoche.2020.107966

Keywords

Tellurium; Palladium; X-ray structure; DFT calculations; Cyclic voltammetry

Funding

  1. CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior, Brazil) CAPES-PRINT [8881.310412/2018]
  2. CAPES-PROBRAL [88881.144118/2017]
  3. CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, Brazil) [312388/2018-7]
  4. FINEP (Financiadora de Estudos e Projetos)

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[PdI(TePy-2)(I2TePy-2)(2)] is obtained via a rare oxidation reaction of palladium powder by the in situ generated diiodine adduct of bis-2-pyridylditelluride at room temperature. An X-ray diffraction study reveals the molecular structure of [PdI(TePy-2)(I2TePy-2)(2)], where the palladium atom is surrounded by an iodide and three tellurium atoms (two [I2TePy-2] and one [TePy-2] groups). The oxidation states for the tellurium atoms were analysed using calculated atomic charges and electron localization function (ELF). The optical bang gap for [PdI(TePy-2) (I2TePy-2)(2)] was determined through theoretical (DFT) and experimental (diffuse reflectance UV-Visible) studies and the electrochemical behavior for the compound was examined by cyclic voltammetry.

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