Hafnium tetrafluoride
# Hafnium tetrafluoride

Hafnium tetrafluoride is the inorganic compound with the formula $HfF_4.$ It is a white solid. It adopts the same structure as zirconium tetrafluoride, with 8-coordinate Hf(IV) centers.

Hafnium tetrafluoride forms a trihydrate, which has a polymeric structure consisting of octahedral Hf center, described as $(μ−F)_2[HfF_2(H_{20})_2]_n(H_2O)_n$ and one water of crystallization. In a rare case where the chemistry of Hf and Zr differ, the trihydrate of zirconium(IV) fluoride has a molecular structure $(μ−F)_2[ZrF_3(H_{20})_3]_2,$ without the lattice water.

