Knudsen effusion mass spectrometric determination of the complex vapor composition of samarium, europium, and ytterbium bromides

Sergeev, Dmitry; Бутман, М. Ф.; Моталов, В. Б.; Кудин, Л. С.; Krämer, Karl

doi:10.1002/rcm.6617

Cited by 6 publications

(6 citation statements)

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“…The present work continues our systematic investigations , of the thermodynamic and energy characteristics of the thermally unstable lanthanide halides and focuses on the determination of the atomization energies of LnX (Ln = Sm, Eu, and Yb; X = Cl, Br, and I) by KEMS.…”

Section: Introductionmentioning

confidence: 88%

“…In Table the used samples are listed. LnCl 2 and LnBr 2 were synthesized in the same way as described for the bromides . The iodides were synthesized from the elements.…”

Section: Methodsmentioning

confidence: 99%

“…LnCl 2 and LnBr 2 were synthesized in the same way as described for the bromides. 16 The iodides were synthesized from the elements. SmI 3 was made in an evacuated silica ampule at 773 K. Then SmI 2 was obtained according to reaction 2 in a sealed Ta ampule under vacuum at 1173 K:…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Atomization Energies of LnX Molecules (Ln = Sm, Eu, and Yb; X = Cl, Br, and I)

et al. 2014

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The gas phase equilibria Ba + LnX = BaX + Ln (Ln = Sm, Eu, Yb; X = Cl, Br, I) were investigated by Knudsen effusion mass spectrometry using a low energy of ionizing electrons to avoid fragmentation processes. The BaX molecules were used as references with well-established bond energies. The atomization enthalpies Δat H 0 ° of the LnX molecules were determined to be 427 ± 9 (SmCl), 409 ± 9 (EuCl), 366 ± 9 (YbCl), 360 ± 10 (SmBr), 356 ± 13 (EuBr), 316 ± 9 (YbBr), 317 ± 10 (SmI), 293 ± 10 (EuI), and 283 ± 10 (YbI) kJ·mol–1.

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Section: Introductionmentioning

confidence: 88%

“…In Table the used samples are listed. LnCl 2 and LnBr 2 were synthesized in the same way as described for the bromides . The iodides were synthesized from the elements.…”

Section: Methodsmentioning

confidence: 99%

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Atomization Energies of LnX Molecules (Ln = Sm, Eu, and Yb; X = Cl, Br, and I)

et al. 2014

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“…The present work continues our systematic investigations of the molecular and ionic sublimation of lanthanide halides by KEMS; see for example, [10][11][12][13][14]. The composition of the saturated vapor of CeI 3 was determined and the thermochemical data of the vapor constituents were refined on the basis of the latest sets of molecular parameters.…”

Section: Introductionmentioning

confidence: 71%

Study of Molecular and Ionic Vapor Composition over CeI₃by Knudsen Effusion Mass Spectrometry

Dunaev

Моталов

Кудин

et al. 2016

Journal of Spectroscopy

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The molecular and ionic composition of vapor over cerium triiodide was studied by Knudsen effusion mass spectrometry. In the saturated vapor over CeI3the monomer, dimer, and trimer molecules and the negative ions I−,CeI4-, andCe2I7-were identified in the temperature range of 753–994 K. The partial pressures of CeI3, Ce2I6, and Ce3I9were determined and the enthalpies of sublimation,ΔsH°(298.15 K) in kJ·mol−1, in the form of monomers (298±9), dimers (415±30), and trimers (423±50) were obtained by the second and third laws of thermodynamics. The enthalpy of formation,ΔfH°(298.15 K) in kJ·mol−1, of the CeI3(-371±9), Ce2I6(-924±30), and Ce3I9(-1585±50) molecules and theCeI4-(-857±19) andCe2I7-(-1451±50) ions were calculated. The electron work function,φe=3.3±0.3 eV, for the CeI3crystal was evaluated.

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“…Бромиды и иодиды лантанидов Завершен цикл работ по термодинамике молекулярной и ионной сублимации бромидов и иодидов лантанидов [73][74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92]. Исследование этих соединений имеет важное прикладное значение в различных областях науки, техники и технологии.…”

Section: термодинамика парообразного состоянияunclassified

Vaporization Processes and Accurate Molecular Structure of a Number of Organic and Inorganic Compounds Promising for Use in Technologies Involving the Gas Phase

2023

Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.

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Structural, spectroscopic and thermodynamic studies carried out in the scientific laboratories of the Physics Department of the Ivanovo State University of Chemistry and Technology in the last 5-10 years are briefly reviewed. For citation: Girichev G.V., Giricheva N.I., Kudin L.S., Solomonik V.G., Belova N.V., Butman M.F., Vyalkin D.A., Dunaev A.M., Eroshin A.V., Zhabanov Yu.A., Krasnov A.V., Kuzmina L.E., Kuzmin I.A., Kurochkin I.Yu., Motalov V.B., Navarkin I.S., Pimenov O.A., Pogonin A.E., Sliznev V.V., Smirnov A.N., Tverdova N.V., Shlykov S.A. Vaporization processes and accurate molecular structure of a number of organic and inorganic compounds promising for use in technologies involving the gas phase. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2023. V. 66. N 7. P. 11-30. DOI: 10.6060/ivkkt.20236607. 6850j.

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Knudsen effusion mass spectrometric determination of the complex vapor composition of samarium, europium, and ytterbium bromides

Abstract: The quantitative vapor composition of Sm, Eu, and Yb tri- and dibromides was determined. It was found that only EuBr2 was stable in the studied temperature range. The developed approaches can be useful in the case of other thermally unstable compounds.

Cited by 6 publications

References 20 publications

Atomization Energies of LnX Molecules (Ln = Sm, Eu, and Yb; X = Cl, Br, and I)

Atomization Energies of LnX Molecules (Ln = Sm, Eu, and Yb; X = Cl, Br, and I)

Study of Molecular and Ionic Vapor Composition over CeI₃by Knudsen Effusion Mass Spectrometry

Vaporization Processes and Accurate Molecular Structure of a Number of Organic and Inorganic Compounds Promising for Use in Technologies Involving the Gas Phase

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Knudsen effusion mass spectrometric determination of the complex vapor composition of samarium, europium, and ytterbium bromides

Abstract: The quantitative vapor composition of Sm, Eu, and Yb tri- and dibromides was determined. It was found that only EuBr2 was stable in the studied temperature range. The developed approaches can be useful in the case of other thermally unstable compounds.

Cited by 6 publications

References 20 publications

Atomization Energies of LnX Molecules (Ln = Sm, Eu, and Yb; X = Cl, Br, and I)

Atomization Energies of LnX Molecules (Ln = Sm, Eu, and Yb; X = Cl, Br, and I)

Study of Molecular and Ionic Vapor Composition over CeI3by Knudsen Effusion Mass Spectrometry

Vaporization Processes and Accurate Molecular Structure of a Number of Organic and Inorganic Compounds Promising for Use in Technologies Involving the Gas Phase

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Study of Molecular and Ionic Vapor Composition over CeI₃by Knudsen Effusion Mass Spectrometry