Mossbauer spectra of trispyrrolidylcarbodithioates of Cr(III), Co(III), Ga(III), and In(III) doped with Fe(III). Evidence of cross relaxation between Fe(III)–Cr(III)

Mossabauer spectra have been measured at 298, 78, and 4.2°K on chromium (III), cobalt(III), gallium(III), and indium(III) trispyrrolidylcarbodithioates containing 1–35 at.% iron(III). At 4.2°K the usual six line pattern due to magnetic hyperfine splitting is observed for the iron(III) doped diamagnetic matrices. However, for the paramagnetic chromium (III) matrix, a five line spectrum is found at iron concentrations of 1–18 at.%, indicating a spin-spin relaxation between iron(III) and chromium(III) ions.