A mass spectrometric study of the vaporization of erbium hexafluoroacetylacetonate |
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| Authors: | G. V. Girichev S. A. Shlykov N. I. Giricheva A. V. Krasnov I. O. Zyabko N. P. Kuz’mina I. G. Zaitseva |
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| Affiliation: | (1) Ivanovo State University of Chemical Technology, Ivanovo, Russia;(2) Ivanovo State University, Ivanovo, Russia;(3) Faculty of Chemistry, Moscow State University, Leninskie gory, Moscow, 119992, Russia |
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| Abstract: | The sublimation of erbium tris-hexafluoroacetylacetonate Er(C5O2HF6)3 was studied by the Knudsen effusion method with the mass spectrometric determination of vapor composition. Groups of ions containing one, two, and three metal atoms were recorded. The enthalpies of sublimation of the monomeric, dimeric, and trimeric forms ΔS H°(362 K) were found to be 133 ± 4, 135 ± 7, and 139 ± 38 kJ/mol, respectively. The melting point of Er(C5O2HF6)3 was 390 ± 2 K. No oligomeric forms were observed in vapor superheated above 430 K. |
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