Molybdenum-Iron Sulfide-Bridged Double Cubanes

摘要

In the first reaction system, the product mole ratio 17:15 ≈3:1 is explained in terms of differential steric hindrance of conformations arising from rotation around the Fe-S-Fe bridge. The core composition of double cubane 15 (Mo_2- Fe_6S_9) approaches that of FeMoco(MoFe_7S_9). The core composition of 17 is exactly the same as FeMoco; 17 is the first synthetic cluster with this property.