Interatomic Distances in the Bifluoride Ion

Abstract

Further refinement has been carried out on the neutron diffraction data for potassium bifluoride. Best agreement was obtained for a physically impossible model which must be rejected on other grounds. Following Ibers, the hydrogen atom is assumed to be centrally located. Combination of spectroscopic and diffraction data from sodium, potassium, and ammonium bifluorides allows a detailed analysis of the thermal motions to be made. The average F ···F distance, after correction, is found to be 2.292 ± 0.004 Å.

Equation of State of Potassium Hydrogen Fluoride to 12.3 GPa and Stability ofI4/mcmStructure to 50 GPa: An Energy-Dispersive X-Ray Diffraction Study

“…The unit cell parameters determined at amusually separable from the sample peaks using GENIE. bient pressure, a ϭ 5.668(2) Å and c ϭ 6.801(7) Å , are The experimental error in pressure determination is estiin extremely good agreement with those of Carrell and mated to be Ϯ0.03 GPa at ambient, rising to Ϯ0.1 GPa at Donohue (20). Cell parameter precision deteriorated with about 10 GPa as the spectrum quality decreased.…”