Abstract
Environment of H
3O
+, H
2O, HF and F
− species in fluoride metalates templated with
tren.
▪
The environment of H
3O
+, H
2O, HF and F
− species (non-bonded to metals) is considered in fluoride metalates which crystallise from the (Al(OH)
3, Cr(OH)
3, FeF
3, ZrF
4, Ta
2O
5)-
tren-HF
aq·–ethanol systems (microwave heating at 190
°C during 1
h). The presence of (H
3O)(H
2O)
6
+ clusters or H
3O
+ cations, of isolated or associated H
2O molecules, of (HF
2)
− and F
− anions is evidenced. The thermal stability of the solids depends strongly on the nature of the hydrogen-bonded species associated with the preceding cations or anions and on the formation of water ribbons or layers.