Spectra of some d6 and d8 ions in fused LiCl–KCl at 450 °C

Abstract

The spectra of PdCl2, K2PtCl4, K3RhCl6, and K3IrCl6 in fused LiCl–KCl eutectic at 450 °C are reported. The rhodium(III) and iridium(III) species are shown to exist as MCl63− octahedral complexes with lower values of Δ and higher values of β than in aqueous solution. The palladium system is believed to contain the essentially octahedral PdCl64− complex which has a small tetragonal distortion, whereas for the platinum(II) species a purely tetragonal classification is more appropriate.