Issue 20, 2024

Assembly of Si-substituted heteropolyoxotantalate architecture

Abstract

The heteropolyoxotantalates (hetero-POTas) represent a fascinating class of compounds characterized by diverse structural variations and outstanding physicochemical properties. However, the development of hetero-POTas remains an intriguing challenge due to factors such as the indigent solubility, the terribly sluggish reaction kinetics, and the high alkaline reaction atmosphere of the POTa category. In this study, the first hetero-POTa containing Si element, Li7KNa11H6[Si2Ta24(O2)20O52(OH)9]·85H2O (1), was created through self-assembly in a neutral solution. The polyoxoanions embrace 5 tetrahedral {[Ta(O2)O5]4}, 4 {TaO6} and 1 {Si2O7} unit. The compound is the largest hetero-POTa at present. Additionally, 1 has a decent proton conductivity performance with proton conductivity of 3.63 × 10−3 S cm−1.

Graphical abstract: Assembly of Si-substituted heteropolyoxotantalate architecture

Supplementary files

Article information

Article type
Research Article
Submitted
19 jun 2024
Accepted
23 aug 2024
First published
28 aug 2024

Inorg. Chem. Front., 2024,11, 6940-6947

Assembly of Si-substituted heteropolyoxotantalate architecture

H. Chen, H. Xu, X. Ma, P. Ma, J. Wang and J. Niu, Inorg. Chem. Front., 2024, 11, 6940 DOI: 10.1039/D4QI01540A

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