Electron paramagnetic resonance and electron-nuclear double-resonance research at 9.5 and 34GHz had demonstrated that 2 types of [RhCl6]4– complex could co-exist in AgCl crystals; depending upon the crystal growth method and the sample pre-treatment. Based upon these results, temperature-induced changes to the electron paramagnetic resonance spectrum of Rh2+-doped AgCl single crystals could be explained by differences in the dynamic behaviors of the 2 complexes.

Reinterpretation of Temperature-Induced Dynamic Behavior in the EPR Spectrum of Rh2+ Centers in AgCl. H.Vrielinck, F.Callens, P.Matthys: Physical Review B, 2003, 68[21], 212405 (3pp)