From a Metastable Layer to a Stable Ring

S.-J. Oh, S.-J. Lim, T.-S. You, K. M. Ok, From a Metastable Layer to a Stable Ring: A Kinetic Study for Transformation Reactions of Li2Mo3TeO12 to Polyoxometalates, Chem. Eur. J., 2018, 24, 6712-6716. DOI: 10.1002/chem.201704755

First published: 07 December 2017

Abstract

A metastable tellurite, Li2Mo3TeO12, revealing a corrugated layered structure in an extremely strained coordination environment was hydrothermally synthesized in high yield. Li2Mo3TeO12 undergoes Li+‐exchange‐driven facile structural transformation reactions to polyoxometalates. The kinetic data for the transformation reactions at various conditions were successfully obtained by simple lab‐source powder X‐ray diffraction. The investigation suggests that the solid‐state transformation reactions may occur through a series of steps; substitution, decomposition, recombination, and precipitation. This new finding could be utilized in discovering functional metastable materials as well as understanding their phase transition mechanisms.

Keywords:

kinetics, lithium, metastable, tellurites, molybdenum, X-ray diffraction.