Proof of existence and thermochemical characterization of the gaseous molecule VOCl2

Article abstract of DOI:10.1002/zaac.19966221006

By use of the Knudsen-cell mass spectrometry the existence of VOCl₂(g) is proven. Lines of fragmentation are set up for VOCl₃(g). The vapor above V₂O₃(s) with Cl₂(g) is examined. The sublimation of VOCl₂ is measured at a temperature of 550-620 K. By 2nd law calculations the heat of sublimation is defined. The calculation for the gaseous VOCl₂ leads to Δ_BH°(VOCl₂(g), 298 K) = -(130,4 ± 1,5) kcal · mol^-1. The influence of VOCl₂(g) for chemical vapor transport reactions of vanadium oxides with Cl₂ is discussed by equilibrium calculations. Johann Ambrosius Barth 1996.