Structure
Both low and high temperature polymorphs exist. The low temperature form is known as β-Ta2O5, and the high temperature form is known as α-Ta2O5. The transition point between these two forms has been reported as 1360 °C. The transition is slow but reversible. The structures of both polymorphs consist of chains built from octahedral and pentagonal bipyramidal polyhedra sharing opposite vertices. These chains are further joined by sharing edges.
Read more about this topic: Tantalum Pentoxide
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