Aftereffects of the cobalt-57–iron-57 electron-capture reaction in cobalt-57-doped tricadmium bis[hexacyanoferrate(III)] dodecahydrate

Abstract

Mössbauer-emission spectra of cobalt-57-doped Cd₃[Fe(CN)₆]₂, 12H₂O have been recorded at various temperatures and resolved into two doublets, one symmetric for the parent [Fe(CN)₆]^3– and one asymmetric attributed to a square-pyradimal [Fe(CN)₅]^2– complex. The asymmetry vanishes with increasing temperature and thus cannot be attributed to a Goldanskii–Karyagin effect. The possibilities of paramagnetic relaxation are briefly discussed.