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Ni II 36 ‐Containing 54‐Tungsto‐6‐Silicate: Synthesis, Structure, Magnetic and Electrochemical Studies

Goura, Joydeb ; Bassil, Bassem S. ; Ma, Xiang ; Rajan, Ananthu ; Moreno‐Pineda, Eufemio ; Schnack, Jürgen ; Ibrahim, Masooma ; Powell, Annie K. ; Ruben, Mario ; Wang, Jingjing ; Ruhlmann, Laurent ; Kortz, Ulrich

Chemistry : a European journal, 2021-11, Vol.27 (61), p.15081-15085 [Periódico revisado por pares]

Wiley-VCH Verlag

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  • Título:
    Ni II 36 ‐Containing 54‐Tungsto‐6‐Silicate: Synthesis, Structure, Magnetic and Electrochemical Studies
  • Autor: Goura, Joydeb ; Bassil, Bassem S. ; Ma, Xiang ; Rajan, Ananthu ; Moreno‐Pineda, Eufemio ; Schnack, Jürgen ; Ibrahim, Masooma ; Powell, Annie K. ; Ruben, Mario ; Wang, Jingjing ; Ruhlmann, Laurent ; Kortz, Ulrich
  • Assuntos: Chemical Sciences ; Inorganic chemistry
  • É parte de: Chemistry : a European journal, 2021-11, Vol.27 (61), p.15081-15085
  • Notas: PMCID: PMC8596682
  • Descrição: Abstract The 36‐Ni II ‐containing 54‐tungsto‐6‐silicate, [Ni 36 (OH) 18 (H 2 O) 36 (SiW 9 O 34 ) 6 ] 6− ( Ni 36 ) was synthesized by a simple one‐pot reaction of the Ni 2 ‐pivalate complex [Ni 2 ( μ ‐OH 2 )(O 2 CCMe 3 ) 4 (HO 2 CCMe 3 ) 4 ] with the trilacunary [SiW 9 O 34 ] 10− polyanion precursor in water and structurally characterized by a multitude of physicochemical techniques including single‐crystal XRD, FTIR, TGA, elemental analysis, magnetic and electrochemical studies. Polyanion Ni 36 comprises six equivalent {Ni II 6 SiW 9 } units which are linked by Ni−O−W bridges forming a macrocyclic assembly. Magnetic studies demonstrate that the {Ni 6 } building blocks in Ni 36 remain magnetically intact while forming a hexagonal ring with antiferromagnetic exchange interactions between adjacent {Ni 6 } units. Electrochemical studies indicate that the first reduction is reversible and associated with the W VI/V couple, whereas the second reduction is irreversible attributed to the Ni II/0 couple.
  • Editor: Wiley-VCH Verlag
  • Idioma: Inglês
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