A novel diniobium-inserted sandwich-type polyoxometalate K6H3[Nb2K(H2O)(4)(A-alpha-SiW9O34)2]center dot 23H(2)O constructed from two trivacant Keggin [A-alpha-SiW9O34](10-) moieties linked via a V-shaped {Nb2K} group

作者：Zhang Dongdi; Li Suzhi; Wang Jingping; Niu Jingyang^*

来源：Inorganic Chemistry Communications, 2012, 17: 75-78.

DOI：10.1016/j.inoche.2011.12.018

• Polyoxometalate
• Sandwich-type structure
• Niobium
• Photocatalyst

A novel sandwich-type polytungstosilicate K6H3[Nb2K(H2O)(4)(A-alpha-SiW9O34)(2)]center dot 23H(2)O (1) has been prepared by reaction of K7HNb6O19 center dot 13H(2)O with Na-10[A-alpha-SiW9O34]center dot 23H(2)O in the presence of H2O2 under acidic medium and structurally characterized by elemental analysis, IR spectra, UV spectra and single-crystal X-ray diffraction. 1 consists of two trivacant Keggin [A-alpha-S1W(9)O(34)](10-) moieties linked via a V-shaped (Nb2K) group resulting in a diniobium-inserted sandwich-type structure and represents a novel diniobium-inserted sandwich-type tungstosilicate. The photocatalytic measurement illustrates that 1 can effectively accelerate the photodegradation of rhodamine-B.

• 出版日期2012-3
• 单位河南大学