Spin-exchange interactions in the cubane-like cluster dimers [NEt4]3[Fe6M2S8(SPh)6(OMe)3] (M Mo or W)

Abstract

Average magnetic moments, ${\overline{\mu }}_{\underset{¯}{m}}$, versus temperature in the range 300−1.8K, and the variation of ${\overline{\mu }}_{\underset{¯}{m}}$ with applied magnetic field, from 0.125 to 2.0T, are reported for [NEt₄]₃[Fe₆M₂S₈(SPh)₆(OMe)₃] (M Mo or W). These data have been interpreted in terms of antiferromagnetic spin coupling between the iron atoms within the separate {Fe₃MS₄} cubane-like clusters of the anions.