Document Type


Publication Date



The equilibria involving the gaseous species SnBi, SnBi2, and SnBi3 above the condensed system Bi–Sn contained in a graphite cell have been investigated by the Knudsen effusion technique combined with mass spectrometry. Third law enthalpies for the reactionsSnBin(g)=Sn(cond)+nBi(g), n=1–3, were evaluated. By combining the experimental reactionenthalpies with the appropriate thermodynamic data taken from literature, the following atomization energies, ΔaHo0, and enthalpies of formation,ΔfHo298.15, in kJ mol−1, have been derived: SnBi, 191.1±12.0 and 317.5±12.0; SnBi2, 415.2±15.0 and 303.0±15.0; SnBi3, 603.4±18.0 and 323.0±18.0.


Copyright 2002 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

The following article appeared in Meloni, G. and Gingerich, K. A., Atomization energies and enthalpies of formation of the SnBin (n=1–3) gaseous molecules by Knudsen cell mass spectrometry. The Journal of Chemical Physics, 116, 6957-6960 (2002) and may be found at



Included in

Chemistry Commons