The Dimerization Energies of the Ge₂S₂, Ge₂Se₂, and Ge₂Te₂ Molecules

Abstract

Abstract The germanium monochalcogenide molecules Ge 2 S 2 , Ge 2S e 2 , and Ge 2 Te 2 were identified in a Knudsen cell mass spectrometric study of the vapors in equilibrium over solid GeS, GeSe, and GeTe. From a second and third law evaluation of the equilibrium data the following dimerization energies Δ H 0,dim o were determined: 106.5 ± 2.1, 102.1 ± 4.6, 102 ± 8 kJ mol −1 for Ge 2 S 2 , Ge 2 Se 2 , Ge 2 Te 2 , respectively. These data and literature data allow to look into trends of the bonding energetics of group IVB‐VIB gaseous compounds.