Multiple supported Keggin-type polyoxometalate polymer built upon weak copper-oxygen interaction

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• 作者：Zhangang Han^a ; ^{hanzg116@yahoo.com.cn} ; Qinghua Hao^a ; Xueliang Zhai^a ; Jingli Xie^b ; ^{jingli.xie@monash.edu}
• 关键词：Polyoxometalate ; Copper ; Weak interaction ; Ligand ; Polymer
• 刊名：Inorganica Chimica Acta
• 出版年：2012
• 出版时间：15 March, 2012
• 年：2012
• 卷：382
• 期：Complete
• 页码：105-110
• 全文大小：1462 K

文摘

Two inorganic-organic hybrid compounds based on Keggin-type polyoxotungstates have been synthesized and characterized. X-ray single crystal analysis indicated that both compounds [Cu(bpe)]₆[HCu_0.5W₁₂O₄₀]¡¤6H₂O (1) and [Cu(bpe)]₆[PW^V₃W^VI₉O₄₀]¡¤8H₂O (2) (bpe = trans-1,2-di-(4-pyridyl)-ethylene) exhibit high-dimensional frameworks constructed from Keggin-type anions and from secondary metal coordination groups of Cu-bpe. It is interesting that in two compounds there are eight Cu-bpe fragments to be anchored around one anion via relatively weak Cu-O interactions (Cu-O = 2.482-2.812 ?), respectively. Compound 1 is a three-dimensional framework; while compound 2 represents a two-dimensional structure. The luminescent property, cyclic voltammetry and thermal stability of 1-2 have been investigated.