Asymmetrically decorated POM framework formed by a chiral polyanion

Reactions of NaH 2 AsO 4 with C-type polyanion precursor lead to a new compound, (NH 4 ) 15 [As 2 Fe 6 Mo 22 O 85 AsO 2 (OH) 2 ]·31.5H 2 O (1). Compound 1 was characterized by elemental analysis, infrared spectra, thermogravimetric analysis, and single-crystal X-ray diffraction. Structural analysis...

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Bibliographic Details
Published in:Journal of coordination chemistry 2017-02, Vol.70 (3), p.381-391
Main Authors: Wu, Qiong, Wu, Wei, Wang, Baoling, Qiao, Yongfeng, Ju, Hongping, Liu, Yuqiang, Wang, Hai
Format: Article
Language:English
Subjects:
Acetal resins
asymmetrically decorating
Asymmetry
Crystals
Decoration
Magnetization
Photocatalysis
Polyanion
Precursors
single molecular magnet
Structural analysis
X ray diffraction
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Summary:Reactions of NaH 2 AsO 4 with C-type polyanion precursor lead to a new compound, (NH 4 ) 15 [As 2 Fe 6 Mo 22 O 85 AsO 2 (OH) 2 ]·31.5H 2 O (1). Compound 1 was characterized by elemental analysis, infrared spectra, thermogravimetric analysis, and single-crystal X-ray diffraction. Structural analysis reveals that AsO 2 (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 AsO 2 (OH) 2− may offer new active sites and enhanced the overall photocatalytic activity compared with the C-type precursor.
ISSN:0095-8972
1029-0389
DOI:10.1080/00958972.2016.1262539