Discovery and Isolation of Two Arsenotungastate Species: [As4W48O168]36– and [As2W21O77(H2O)3]22

Two novel arsenotungstate species, [As4­W48­O168]36– (1a) and [As2­W21­O77­(H2O)3]22– (2a), have been successfully isolated under a one-pot synthetic method. 1a is the second largest arsenotungstate cluster and is constructed from four {AsW12} clusters combined together. 2a can be described as lacun...

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Published in:Inorganic chemistry 2023-02, Vol.62 (8), p.3338-3342
Main Authors: Chen, Hanhan, Zheng, Kangting, Wang, Jingru, Niu, Bingxue, Ma, Pengtao, Wang, Jingping, Niu, Jingyang
Format: Article
Language:English
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Summary:Two novel arsenotungstate species, [As4­W48­O168]36– (1a) and [As2­W21­O77­(H2O)3]22– (2a), have been successfully isolated under a one-pot synthetic method. 1a is the second largest arsenotungstate cluster and is constructed from four {AsW12} clusters combined together. 2a can be described as lacunary sites of {As2W19} filled by {W2O8} units. Compounds 1 and 2 exhibit proton conductivity properties, and the conductivity value of 1 is 5.0 × 10–3 S cm–1 at 98% relative humidity and 75 °C. This work proves that the lattice water molecules and polyoxoanions can participate in the formation of a hydrogen bond, acting as effective pathway for intermolecular proton conduction.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.2c04280