Vapor Phase of Thermally Unstable Sm, Eu, Yb Bromides

Vaporization of thermally unstable SmBr 3 , YbBr 3 , SmBr 2 , EuBr 2 , and YbBr 2 is investigated by the high temperature mass spectrometry. It is found that the composition of vapor phase changes in the course of vaporization due to thermal decomposition of tribromides and disproportionation of dib...

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Bibliographic Details
Main Authors: Sergeev, D. N., Butman, Mikhail F., Motalov, V. B., Kudin, L. S., Krämer, K. W.
Format: Conference Proceeding
Language:English
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Summary:Vaporization of thermally unstable SmBr 3 , YbBr 3 , SmBr 2 , EuBr 2 , and YbBr 2 is investigated by the high temperature mass spectrometry. It is found that the composition of vapor phase changes in the course of vaporization due to thermal decomposition of tribromides and disproportionation of dibromides. The neutral (Ln, Br, Br 2 , LnBr, LnBr 2 , LnBr 3 , Ln 2 Br 4 , Ln 2 Br 5 , and Ln 2 Br 6 ) and charged (Br – , LnBr 3 – , LnBr 4 – ) species are present in vapor at various vaporization stages. Eventually for each sample studied the vaporization approaches steadiness when the LnBr 2 molecules are predominant in the vapor.
ISSN:1938-5862
1938-6737
DOI:10.1149/04601.0173ecst