An organic-inorganic hybrid polyoxometalate based on the dodecatungstate building block: [Ni(phen)(H₂O)₃]₂[Ni(H₂O)₅][H₂W₁₂O₄₀] · 6H₂O

Abstract

An organic-inorganic hybrid polyoxometalate [Ni(phen)(H₂O)₃]₂[Ni(H₂O)₅][H₂W₁₂O₄₀] · 6H₂O (phen = 1,10-phenanthroline) has been isolated and characterized by IR, UV, electrochemistry and single-crystal X-ray diffraction. X-ray crystallographic study indicates that the title compound is monoclinic, space group C2/c, with lattice constants a = 21.7672(17), b = 16.1189(12), c = 20.7949(16) Å, β = 107.8440(10)°, V = 6945.2(9) ų, D _c = 3.528 Mg m⁻³, F(000) = 6600, Z = 4, R ₁ = 0.0372, wR ₂ = 0.0845. The molecular fragment of the title compound consists of two supporting [Ni(phen)(H₂O)₃]²⁺ coordination cations, one supporting [Ni(H₂O)₅]²⁺ unit, one metatungstate polyoxoanion [H₂W₁₂O₄₀]⁶⁻ and six H₂O molecules of crystallization.

Keywords:

• Dodecatungstate
• Polyoxometalate
• Nickel ion

Acknowledgements

This work was supported by the Nature Science Foundation of China, Specialized Research Fund for the Doctoral Program of Higher Education, Henan Innovation Project for University Prominent Research Talents, the Foundation of Educational Department of Henan Province and Natural Science Foundation of Henan Province.