Serinato-, tyrosinato-, and prolinato-derivatives of Fe4S4 clusters

Abstract
Reaction of [Fe4S4(SBut)4]2– with the methyl esters of L-serine, L-tyrosine, or L-proline yields the complexes [Fe4S4(AA)4]2–(AA = anion of the amino acid methyl ester); all the complexes have been characterized in solution and the first two have been isolated as solids.