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Formation and Stability of Gaseous Ternary Oxides of Group 14–16 Elements and Related Oxides of Group 15 Elements: Mass Spectrometric and Quantum Chemical Study
Author(s) -
Kunkel Katerina,
Milke Edgar,
Binnewies Michael
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201402734
Subject(s) - chemistry , ternary operation , quantum chemical , group (periodic table) , knudsen number , standard enthalpy of formation , tellurium , gas phase , mass spectrometry , inorganic chemistry , phase (matter) , analytical chemistry (journal) , thermodynamics , organic chemistry , molecule , physics , chromatography , computer science , programming language
The formation of four hitherto unknown lead tellurium oxides – PbTeO 3 , PbTe 2 O 5 , Pb 2 TeO 4 and Pb 2 Te 2 O 6 – was observed in the gas phase by means of a mass‐spectrometric Knudsen‐cell method. Other ternary oxides of group 14–16 elements were not observed in the gas phase. The enthalpies of formation for these oxides were obtained experimentally by means of a mass‐spectrometric Knudsen‐cell method and confirmed theoretically by using quantum chemical (QC) calculations. Appearance potential measurements were conducted for PbTeO 3 and Pb 2 TeO 4 . The structures of the ternary oxides that represent the minima on the potential‐energy surfaces were found by using QC calculations. The behaviour of the related compounds PbTeO 3 , X 2 O 3 , Pb 2 Te 2 O 6 and X 4 O 6 in the gas phase has been discussed (for which X = P, As, Sb, Bi).
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