Fluoride crystal structures. Part VIII. Neutron diffraction studies of potassium tetrafluorobromate(III) and potassium tetrafluoroaurate(III)

Neutron diffraction studies have shown conclusively that potassium tetrafluorobromate(III) and potassium tetrafluoroaurate(III) are isostructural, with four fluorine atoms in a square planar arrangement around the bromine or gold atom in the anion.