1. Synthesis, characterization, and magnetic / electrochemical properties of Wells-Dawson polyoxometalate containing Ni (II) counter-ion.
- Author
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Rehan, Kanwar, Asma, Maliha, Misawa, Toshiyuki, Ito, Takeru, Sokolov, Andrei, Sher, M., Tirmizi, Syed Ahmad, and Sohail, Manzar
- Subjects
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MAGNETIC susceptibility , *CRYSTAL structure , *NICKEL ferrite , *VALENCE bonds , *SPACE groups , *OXIDATION states - Abstract
• Wells-Dawson polyoxometalate containing Ni (II) counter-ion. • Magnetic studies of newly synthesized Wells-Dawson polyoxometalate. • Electrochemical studies of Wells-Dawson polyoxometalate. • Crystal structure of the new Wells-Dawson polyoxometalate. • Super capacitance of Wells-Dawson polyoxometalate. The monomeric Ni(II) containing Wells-Dawson polyoxometalate (POM) complex K 2 Rb 6 Ni 0.33 [P 2 W 18 O 62 ]Cl 2 ∼15·3H 2 O (K 2 Rb 6 –1) was synthesized, for the first time, by the reaction of [Ni 2 (µ-OH 2)(O 2 CCMe 3) 4 (HO 2 CCMe 3) 4 ] and K 6 [P 2 W 18 O 62 ]. 19H 2 O in an aqueous medium. The compound was characterized by elemental analysis, FTIR, TGA, and single-crystal XRD (trigonal, space group R 3 ¯ m , cell length a = 37.3660(4), b = 37.3660(4), c = 12.8340(2) Å, α = 90, β = 90, γ = 120°, V = 15,518.4(3), Z = 9) techniques. The oxidation state of Ni(II) was calculated through bond valence sum (BVS) calculations. The electrochemical study indicated the super capacitance behavior of POM K 2 Rb 6 –1, and its magnetic susceptibility study showed magnetization with a temperature range of 5 K-300 K. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2022
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