Facile Synthesis of Zero-, One-, and Two-Dimensional Vanadyl Pyrophosphates

详细信息    查看全文

• 作者：Diego Solis-Ibarra ; Jared S. Silvia ; Vojtech Jancik ; Christopher C. Cummins
• 刊名：Inorganic Chemistry
• 出版年：2011
• 出版时间：October 17, 2011
• 年：2011
• 卷：50
• 期：20
• 页码：9980-9984
• 全文大小：801K
• 年卷期：v.50,no.20(October 17, 2011)
• ISSN：1520-510X

文摘

Crystallization of Na₂VOP₂O₇ from its aqueous solution results in formation of a one-dimensional inorganic polymer {Na₂VO(H₂O)P₂O₇路7H₂O}_n (1). When this polymer is dehydrated at elevated temperatures this polymer undergoes a phase transition to form the two-dimensional framework 尾-Na₂VOP₂O₇, which although previously reported had been difficult to access. Exchanging lithium for sodium via ion-exchange chromatography results in formation of a discrete, cyclic, tetramer species, Li₈[VOP₂O₇(H₂O)路4H₂O]₄ (2). Isolation of crystalline 尾-Li₂VOP₂O₇ using a dehydration procedure analogous to the one employed for the sodium derivative was unsuccessful. In contrast, we show that 尾-K₂VOP₂O₇ can be obtained from the amorphous phase K₂VOP₂O₇路nH₂O (n = 0鈥?) upon thermal dehydration.