Mößbauer- und Neutronenbeugungs-Messungen an Li6FeCl8

Mößbauer and Neutron Diffraction Studies on Li₆FeCl₈ On Suzuki-Type Li₆FeCl₈ Mößbauer spectra and neutron powder diffraction data are presented. The Suzuki-type structure (space group Fm3 m, Z = 4, 1 031.11(1) pm) was supported refining by the Rietveld method (program PROFIL) to a final R₁ = 6.8%. The Mößbauer spectra confirm the ideal octahedral coordination of the Fe²⁺ ions (no quadrupole splitting). The isomer shift of 1.097(1) mm s^?1 at 295 K resembles those of other ferrous chlorides. At temperatures above the phase transition to deficient NaCl-type solid solution the half-width of the Mößbauer signal strongly increases.