Ionothermal synthesis and characterization of two new heteropolytungstates with 1-ethyl-3-methylimidazolium bromide ionic liquid as solvent

被引：14

作者：

Liu, Wenli ^{[1
]}

Tan, Huaqiao ^{[1
]}

Chen, Wenlin ^{[1
]}

Li, Yangguang ^{[1
]}

Wang, Enbo ^{[1
]}

机构：

[1] NE Normal Univ, Dept Chem, Key Lab Polyoxometalate Sci, Minist Educ, Changchun 130024, Jilin, Peoples R China

来源：

JOURNAL OF COORDINATION CHEMISTRY | 2010年 / 63卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Polyoxometalates; Ionothermal synthesis; Photocatalysis; Crystal structure; METAL-ORGANIC FRAMEWORKS; MICROWAVE-ASSISTED SYNTHESIS; POLYOXOMETALATE; ZEOLITES; CLUSTERS; POLYMER; ANION;

D O I：

10.1080/00958972.2010.495774

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this article, we have synthesized two new heteropolytungstate-based compounds [EMIM]4[SiW12O40] (1) and [EMIM]6[P2W18O62] center dot 4H2O (2) using the ionic liquid (IL) [EMIM]Br (EMIM = 1-ethyl-3-methylimidazolium) as a solvent and characterized them by infrared (IR) and ultraviolet (UV) spectra, thermogravimetric (TG) and elemental analyses, electrochemistry, and single-crystal X-ray analyses. Compound 1 is constructed from one [SiW12O40]4- and four [EMIM]+. In the structure, [SiW12O40]4- and [EMIM]+ are connected by hydrogen bonds with the surface oxygens of the polyoxoanion to form a 3-D supramolecular framework. The heteropolyanion of 2 is a classical Dawson-type structure [P2W18O62]6- and connected with six cations through hydrogen bonds. The structures of these two heteropolyanions are consistent with those synthesized by traditional methods, indicating that ionothermal synthesis is an effective method for the preparation of heteropolyoxometalates. The photocatalytic properties of these compounds have also been investigated.

引用

页码：1833 / 1843

页数：11

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