[Fe3S(S2C10H12)3]2−: The First Synthetic Trinuclear Iron‐Sulfur Cluster Compound

In the first model for trinuclear iron‐sulfur centers in recently discovered proteins—namely, the central FeS7 moiety in [(C2H5)4N][Fe3S7C30H36]·CH3OH—the Fe atoms from a completely bonded triangle and are each surrounded by a tetrahedron of S atoms which is somewhat distorted from idealized symmetry and consists of an inorganic S atom above the center of the metal triangle and three mercapto S atoms, two of which form slightly asymmetric bridges to neighboring Fe atoms.