期刊
DALTON TRANSACTIONS
卷 52, 期 24, 页码 8425-8433出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d3dt00352c
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Single crystals of A(3)MF(6) (A = Rb, Cs; M = Al, Ga) were grown from mixed alkali chloride/fluoride fluxes in sealed silver tubes. Multiple polymorphs were observed at room temperature for Cs3AlF6 and Cs3GaF6, while only one polymorph was observed for the Rb-containing compositions. High temperature behavior of A(3)MF(6) was studied using simultaneous TGA/DSC and high temperature SCXRD/PXRD, revealing structure transitions to the cubic structure type, c-A(3)MF(6), for all four compositions.
Single crystals of A(3)MF(6) (A = Rb, Cs; M = Al, Ga) were grown from mixed alkali chloride/fluoride fluxes in sealed silver tubes. For Cs3AlF6 and Cs3GaF6, two polymorphs were observed at room temperature: m-Cs3MF6 and o-Cs3MF6. For the two Rb containing compositions, only one room temperature polymorph was observed: o-Rb3AlF6 and t-Rb3GaF6, respectively. Simultaneous TGA/DSC and high temperature SCXRD/PXRD were used to study the high temperature behavior of A(3)MF(6). The compounds of all four compositions were found to undergo structure transitions upon heating to the same cubic structure type, c-A(3)MF(6).
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