The magnetic susceptibility and anisotropy for K₃Fe(CN)₆ and Fe(phen)₃(ClO₄)₃,3H₂O from very low to ambient temperatures

Abstract

The magnetic susceptibilities and anisotropies of K₃Fe(CN)₆ and of Fe(phen)₃(ClO₄)₃,3H₂O have been measured between 1.6 and 300 K and between 4.2 and 300 K respectively. The results yield parameter sets for the splitting of the ²T_2g ground term respectively: δ 130 cm^-1, ε 67 to -10 cm^-1, ζ 275 cm^-1, k 0.73; δ 750 cm^-1, ε 20 cm^-1, ζ 280 cm^-1,k 0.81. These have reliability improved above the sets previously available for the compounds and substantiate the earlier work. Unfortunately, they do not aid further in making correlations between details of molecular geometry of the ions and their electronic structures.