Atomization enthalpy and enthalpy of formation of gaseous Si4 from mass spectrometric equilibrium measurements

Atomization enthalpy and enthalpy of formation of gaseous Si4 from mass spectrometric equilibrium measurements

Recent spectroscopic and theoretical investigations have allowed us to calculate new thermal functions for the Si4 molecule. These thermal functions have been combined with new and with reevaluated mass spectrometric data in obtaining an atomization enthalpy of ΔHa,0=1160±22 kJ mol−1 and an enthalpy...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The Journal of chemical physics 1993-11, Vol.99 (10), p.7998-8004
Hauptverfasser: SCHMUDE, R. W, RAN, Q, GINGERICH, K. A
Format: Artikel
Sprache:eng
Schlagworte:
Chemical thermodynamics
Chemistry
Elements, mineral and organic compounds
Exact sciences and technology
General and physical chemistry
Thermodynamic properties
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Recent spectroscopic and theoretical investigations have allowed us to calculate new thermal functions for the Si4 molecule. These thermal functions have been combined with new and with reevaluated mass spectrometric data in obtaining an atomization enthalpy of ΔHa,0=1160±22 kJ mol−1 and an enthalpy of formation of ΔHf,0=643±22 kJ mol−1. The experimental results are compared to MP4/6–31G* and G2 predictions.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.465676