Protonation of the iron–sulfur core in [Fe4S4X4]2–(X = Cl or Br): chemical precedent for the elementary reaction of the hydrogenases and nitrogenases
Abstract
Kinetic studies on [Fe4S4X4]2–(X = Cl or Br) show that the substitution of the first halide for thiolate is catalysed by protonation of the Fe4S4 cubane core, this is the first demonstration that these cores will bind protons.