The synthesis of [PPN][IrRu3(CO)13] and [PPN][IrOs3(CO)13] from the reaction of [PPN][Ir(CO)4] with M3(CO)12 (M = Ru or Os) is discussed. [PPN][IrRu3(CO)13] is a red-brown microcryst. powder, while [PPN][IrOs3(CO)13] is an orange-red microcryst. powder. Both compds. appear to be stable toward air and moisture, but should be stored under N2. Both compds. are sol. in polar org. solvents such as Et2O, THF, CH2Cl2 or MeOH.