Article révisé par les pairs
Résumé : The vapour phase in equilibrium with sodium perrhenate and potassium perrhenate contains comparable amounts of the corresponding monomeric and dimeric molecules. Partial pressures and heats of vaporization for each of these species were measured: NaReO4(l)→NaReO4(g), ΔH°750=45.3±5 kcal/mole, 2NaReO4(l) →(NaReO4)2(g), ΔH°750=56. 7±5 kcal/mole, KReO4(s)→KReO4(g), ΔH°750=45.8±5 kcal/mole, 2KReO4(s) →(KReO4)2(g), ΔH°750=65. 6±5 kcal/mole.