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

详细信息    查看全文

• 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, (NH₄)₃H₃[AsMo₆O₂₁(O₂CC₆H₄NH₂)₃]路8.5H₂O (1), (NH₄)₁₆H₃[(AsMo₆O₂₁)₃(O₂CCH₂CO₂)₅]路18H₂O (2), (NH₄)₁₁H[(AsMo₆O₂₁)₂{O₂C(CH₂)₆CO₂}₃]路8H₂O (3), and (NH₄)₁₈H₆[(AsMo₆O₂₁)₄{C₆H₃(CO₂)₃}₄]路24.5H₂O (4), were synthesized by reaction of As₂O₃ with (NH₄)₆Mo₇O₂₄路4H₂O and organic components in aqueous medium. All of the four hybrids feature a common {AsMo₆} unit composed of a six-membered MoO₆ octahedral ring capped by one {AsO₃} 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).