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From a Metastable Layer to a Stable Ring: A Kinetic Study for Transformation Reactions of Li2 Mo3 TeO12 to
Seung-Jin Oh1, Seong-Ji Lim2, Tae-Soo You2
1Department of Chemistry, Chung-Ang University, Seoul, 06974, Republic of Korea.
Abstract:
A metastable tellurite, Li2 Mo3 TeO12 , revealing a corrugated layered structure in an extremely strained coordination environment was hydrothermally synthesized in high yield. Li2 Mo3 TeO12 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.
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