3D coordination polymer of [HW7O24]5- stabilized by a copper(II) complex and sodium cations: Structure, solid-state stability, and aqueous solution behavior

Xin Fang Wang, Jie Cao, Kun Lin Huang, Yan Qing Xu, Ying Nan Chi*, Chang Wen Hu

*此作品的通讯作者

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10 引用 (Scopus)

摘要

Compound Na[Cu(en)2]2[HW7O 24]·5H2O (1, en = ethanediamine), as the first example of a heptatungstate polymer, has been synthesized in H2O/dmso and characterized by single-crystal X-ray diffraction, IR, UV/Vis, and ESI-MS. The [HW7O24]5- cluster in 1, as an inorganic hexadentate ligand, coordinates to two Na+ and four [Cu(en) 2]2+ cations to construct a 3D extended structure. The solid-state stability of 1 at room temperature was proven by X-ray powder diffraction and digital camera techniques. The electrospray mass spectra suggest that most of the [HW7O24]5- dissociates into relatively more stable [W6O19]2- species in aqueous solution because the coordination bonds around the [HW7O 24]5- anions are broken by the solvation effect of water on the the copper cation. These results demonstrate that a transition-metal- complex cation plays an important role in the isolation and stabilization of a highly charged polyoxometalate anion.

源语言英语
页(从-至)1788-1792
页数5
期刊European Journal of Inorganic Chemistry
10-11
DOI
出版状态已出版 - 4月 2013

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Wang, X. F., Cao, J., Huang, K. L., Xu, Y. Q., Chi, Y. N., & Hu, C. W. (2013). 3D coordination polymer of [HW7O24]5- stabilized by a copper(II) complex and sodium cations: Structure, solid-state stability, and aqueous solution behavior. European Journal of Inorganic Chemistry, (10-11), 1788-1792. https://doi.org/10.1002/ejic.201200810