Ligand-Directed Conformation of Inorganic鈥揙rganic Molecular Capsule and Cage

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• 作者：Donghui Yang ; Yanfen Liang ; Pengtao Ma ; Suzhi Li ; Jingping Wang ; Jingyang Niu
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：March 17, 2014
• 年：2014
• 卷：53
• 期：6
• 页码：3048-3053
• 全文大小：312K
• 年卷期：v.53,no.6(March 17, 2014)
• ISSN：1520-510X

文摘

Four new inorganic鈥搊rganic hybrids, namely, (NH<sub>4sub>)<sub>3sub>H<sub>3sub>[AsMo<sub>6sub>O<sub>21sub>(O<sub>2sub>CC<sub>6sub>H<sub>4sub>NH<sub>2sub>)<sub>3sub>]路8.5H<sub>2sub>O (1), (NH<sub>4sub>)<sub>16sub>H<sub>3sub>[(AsMo<sub>6sub>O<sub>21sub>)<sub>3sub>(O<sub>2sub>CCH<sub>2sub>CO<sub>2sub>)<sub>5sub>]路18H<sub>2sub>O (2), (NH<sub>4sub>)<sub>11sub>H[(AsMo<sub>6sub>O<sub>21sub>)<sub>2sub>{O<sub>2sub>C(CH<sub>2sub>)<sub>6sub>CO<sub>2sub>}<sub>3sub>]路8H<sub>2sub>O (3), and (NH<sub>4sub>)<sub>18sub>H<sub>6sub>[(AsMo<sub>6sub>O<sub>21sub>)<sub>4sub>{C<sub>6sub>H<sub>3sub>(CO<sub>2sub>)<sub>3sub>}<sub>4sub>]路24.5H<sub>2sub>O (4), were synthesized by reaction of As<sub>2sub>O<sub>3sub> with (NH<sub>4sub>)<sub>6sub>Mo<sub>7sub>O<sub>24sub>路4H<sub>2sub>O and organic components in aqueous medium. All of the four hybrids feature a common {AsMo<sub>6sub>} unit composed of a six-membered MoO<sub>6sub> octahedral ring capped by one {AsO<sub>3sub>} trigonal pyramid. Although these hybrids exhibit similar chemical formula, their structures are monomer, dimer (capsule), trimer, and tetramer (cage), respectively, depending upon the nature of carboxylic acids. Also, the assembly processes appear to be highly versatile and sensitive to the inherent nature of carboxylic acids, which direct the assemblies toward construction of POM clusters and participate directly to their stabilization. In addition, successful isolation of these hydrids shows that it would be possible to achieve a variety of structural predesign in this inorganic鈥搊rganic system by means of a ligand design route based on the interplay between the organic molecules and polyoxometalates (POMs).