A [3Fe–3S] 3+ cluster with exclusively μ-sulfide donors
Abstract
A [3Fe–3(μ-S)] 3+ cluster is reported in which each ferric center has a distorted trigonal pyramidal geometry, with an S = 1/2 ground state for the cluster and unusually anisotropic hyperfine coupling constants as determined by variable temperature magnetometry and Mössbauer spectroscopy.