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Possible existence off alkali metal orthocarbonates at high pressure

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Schön,  J. C.
Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;

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Jansen,  M.
Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Čančarević, Ž., Schön, J. C., & Jansen, M. (2007). Possible existence off alkali metal orthocarbonates at high pressure. Chemistry - A European Journal, 13(26), 7330-7348.


Cite as: https://hdl.handle.net/21.11116/0000-000E-B7D9-F
Abstract
We investigate the possible existence of crystalline alkali metal orthocarbonates, A(4)CO(4), where A=Li, Na, K, Rb, and Cs. We study the equilibrium between the possible modifications of the orthocarbonate A(4)CO(4) and the binary mixture of the possible modifications of the alkali oxide A(2)O and those of the alkali metal carbonate A(2)CO(3) as function of pressure. In all cases, the orthocarbonate should be stable at sufficiently high pressure ranging from 22-32 GPa (Rb4CO4) to 200-220 GPa (Cs4CO4).