NEW SUPPORTED RU6N CLUSTERS AS A POTENTIAL TRANSITION METAL NITRIDE CATALYST
Nitrido-ruthenium cluster [Ru6N] catalysts were prepared by reacting [Ru6N(CO)16]− cluster with MgO, K+-doped MgO or Cs+-doped MgO as a potential ruthenium nitride catalyst. The [Ru6N] unit remained in reaction conditions, and exhibited higher activities in ammonia synthesis than conventional Ru catalysts or Ru clusters prepared from [Ru6C(CO)16Me]− or [Ru6(CO)18]2−.