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- W2953318199 abstract "Literature thermodynamic data (enthalpies, entropies, and heat capacities) of the condensed species GeI4(s)(I) and GeI2(s) are revised.Entropies and heat capacities of the gaseous species GeI4(g), GeI2(g), and GeI(g) are calculated by the R.R.H.O. method. Published experimental investigations of the equilibria: GeI4(l) ⇌ GeI4(g), GeI4(s) ⇌ GeI4(g), 2 GeI2 ⇌ Ge(s) + GeI4(g), GeI4 ⇌ GeI2(g) + I2(g), GeI2(s) ⇌ GeI2(g) and Ge(s) + GeI4(g) ⇌ 2 GeI2(g) are discussed. In addition, new measurements of the total pressure above the saturation ranges of the GeI4(l) and for the reaction: Ge(s) + GeI4(l) ⇌ 2 GeI2(g) are performed.Enthalpies of formation of GeI4(g) and GeI(g) are deduced. Enthalpy of formation of GeI(g) is estimated from the evolution of the dissociation energy D°(GeX) (X = Cl, Br, I) against the Z atomic number and from the spectroscopic constants of this molecule. In conclusion a self consistent set of thermodynamic data concerning the germanium-iodine system is proposed.Das Germanium-Iod-System – eine thermodynamische Studie, Einschatzung und erganzende ExperimenteDie thermodynamischen Literaturdaten (Enthalpie-, Entropie- und Warmekapazitatswerte) der kondensierten Verbindungen GeI4(s)(l) und GeI2(s) werden uberpruft.Entropie- und Warmekapazitatswerte fur GeI4(g), GeI2(g) und GeI(g) im Gaszustand werden nach der R.R.H.O.-Methode berechnet. Publiziert sind experimentelle Untersuchungen zu den Gleichgewichten: GeI4(l) ⇌ GeI4(g); GeI4(s) ⇌ GeI4(g); 2 GeI2(s) ⇌ Ge(s) + GeI4(g); ⇌ GeI4(g) GeI4(g) GeI2(g) + I2(g); GeI2(s) ⇌ GeI2(g); Ge(s) + GeI4(g) ⇌ 2 GeI2(g). Ferner werden neue Messungen des Gesamtdrucks uber den Sattigungsbereichen von GeI4(l) und fur die Reaktion Ge(s) + GeI4(l) ⇌ 2 GeI2(g) durchgefuhrt.Die Bildungsenthalpien fur GeI4(g) GeI2(g) werden abGeIeitet. Die Bildungsenthalpie von GeI(g) wird abgeschatzt aus dem Verlauf der Dissoziationsenergie D° (GeX) (X = Cl, Br, I) gegen die Atomzahl Z und aus spektroskopischen Konstanten dieses Molekuls. Absehliesend wird ein geschlossener Satz von thermodynamischen Daten fur das GeI-System vorgeschlagen." @default.
- W2953318199 created "2019-06-27" @default.
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- W2953318199 date "1988-02-09" @default.
- W2953318199 modified "2023-09-25" @default.
- W2953318199 title "ChemInform Abstract: Germanium-Iodine System, Thermodynamic Study Assessment and Complementary Experiments." @default.
- W2953318199 cites W1988141279 @default.
- W2953318199 doi "https://doi.org/10.1002/chin.198806019" @default.
- W2953318199 hasPublicationYear "1988" @default.
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