57Fe-Mössbauer spectroscopic study of some double and triple metal oxalates

57Fe-Mössbauer spectra of double MM’(C2O4)2⋅4H2O (M = Fe, M’ = Mg, Co, Zn) and triple metal oxalates MM’M”(C2O4)3⋅6H2O (M = Fe, M’ = Mg, Mn, Co; M” = Zn) were recorded at room temperature and briefly discussed on the basis of their structural characteristics. No changes in the hyperfine interactions at the 57Fe site were detected because of the presence of the other metal ions.