Synthesis of Sulfur- and Nitrogen-Bridged Diiron Complexes and Catalytic Behavior toward Hydrazines

Novel thiolate-bridged diiron complexes bearing diazenido and diazene ligands in a side-on manner have been prepared and characterized by X-ray analysis. These sulfur-bridged diiron complexes work as effective catalysts toward the reduction of hydrazines into amines and ammonia via a sequential process of protonation and reduction on the sulfur-bridged diiron skeleton, as is likely observed at the active site of nitrogenase.

本研究合成并经X射线分析（X-ray analysis）表征了一类以侧基配位模式结合重氮配体（diazenido）与二亚胺配体（diazene）的新型硫醇盐桥联二铁配合物。这类硫桥联二铁配合物可作为高效催化剂，通过硫桥联二铁骨架上的质子化与还原分步过程，将肼类化合物还原为胺与氨，该催化过程与固氮酶（nitrogenase）活性位点中观测到的催化机制高度相似。