Issue 38, 2021

Lone-pair stabilized channels and blocked transport in apatite-related structures

Abstract

Two apatite-related silicates compounds, Tb2Pb3Si3O12 (I) and Pb5SiP2O12 (II), were obtained in the crystalline forms. Structure and ELF calculated results reveal that the lone pair cation of Pb2+ preferentially occupies the Cs site, and the repulsion between the mutual lone pair stabilizes channels. Moreover, combining conductivity results this preference has the important implications of exclusion and blocking the movement of the oxide ion in the channel of apatite-related structures. Our findings provide an experimental foundation for further interpreting the conductivity decrease in lone-pair ions as dopants into apatite-related silicate materials.

Graphical abstract: Lone-pair stabilized channels and blocked transport in apatite-related structures

Supplementary files

Article information

Article type
Communication
Submitted
07 May 2021
Accepted
07 Sep 2021
First published
08 Sep 2021

Dalton Trans., 2021,50, 13232-13235

Lone-pair stabilized channels and blocked transport in apatite-related structures

C. Tao and R. Li, Dalton Trans., 2021, 50, 13232 DOI: 10.1039/D1DT01485D

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