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Journal of Coordination Chemistry Volume 70, 2017 - Issue 3
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Articles

Asymmetrically decorated POM framework formed by a chiral polyanion

Qiong WuDepartment of Chemical Science and Technology, Kunming University, Kunming, PR China;Key Laboratory of Yunnan Provincial Higher Education, Institutions for Organic Optoelectronic Materials and Devices, Kunming University, Kunming, ChinaCorrespondence[email protected]
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Wei WuLondon Centre for Nano-technology, University College London, London, UK;Key Laboratory of Yunnan Provincial Higher Education, Institutions for Organic Optoelectronic Materials and Devices, Kunming University, Kunming, China
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Baoling WangDepartment of Chemical Science and Technology, Kunming University, Kunming, PR China
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Yongfeng QiaoDepartment of Chemical Science and Technology, Kunming University, Kunming, PR China
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Hongping JuMedical School, Kunming University, Kunming, PR China
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Yuqiang LiuDepartment of Chemical Science and Technology, Kunming University, Kunming, PR China
&
Hai WangKey Laboratory of Yunnan Provincial Higher Education, Institutions for Organic Optoelectronic Materials and Devices, Kunming University, Kunming, ChinaCorrespondence[email protected]
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Pages 381-391 | Received 29 May 2016, Accepted 04 Oct 2016, Published online: 25 Dec 2016
 
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Abstract

Reactions of NaH2AsO4 with C-type polyanion precursor lead to a new compound, (NH4)15[As2Fe6Mo22O85AsO2(OH)2]·31.5H2O (1). Compound 1 was characterized by elemental analysis, infrared spectra, thermogravimetric analysis, and single-crystal X-ray diffraction. Structural analysis reveals that AsO2(OH)2− asymmetrically decorated the POM framework, constituting the first inorganic anion asymmetrically decorating a POM. AC measurements of the frequency-dependent χ′′ below 5 K indicated a slow magnetization relaxation in 1, resembling typical single-molecule-magnet behavior. Photocatalytic experiments indicated that introduction of AsO2(OH)2− may offer new active sites and enhanced the overall photocatalytic activity compared with the C-type precursor.

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