ATOMIZATION ENTHALPY AND ENTHALPY OF FORMATION OF GASEOUS SI(4) FROM MASS-SPECTROMETRIC EQUILIBRIUM MEASUREMENTS

Authors
SCHMUDE RW RAN Q GINGERICH KA
Citation
Rw. Schmude et al., ATOMIZATION ENTHALPY AND ENTHALPY OF FORMATION OF GASEOUS SI(4) FROM MASS-SPECTROMETRIC EQUILIBRIUM MEASUREMENTS, The Journal of chemical physics, 99(10), 1993, pp. 7998-8004
Citations number
54
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
The Journal of chemical physics → ACNP
ISSN journal
00219606
Volume
99
Issue
10
Year of publication
1993
Pages
7998 - 8004
Database
ISI
SICI code
0021-9606(1993)99:10<7998:AEAEOF>2.0.ZU;2-V
Abstract
Recent spectroscopic and theoretical investigations have allowed us to calculate new thermal functions for the Si4 molecule. These thermal f unctions have been combined with new and with reevaluated mass spectro metric data in obtaining an atomization enthalpy of DELTAH(a,0) = 1160 +/- 22 kJ mol-1 and an enthalpy of formation of DELTAH(f,0) = 643 +/- 22 kJ mol-1. The experimental results are compared to MP4/6-31G and G2 predictions.