Phosphorus monoxide as a quadruply bridging ligand: syntheses and X-ray crystal structures of Ru5(CO)15(µ4-PF) and [H2NCy2][Ru5(CO)15(µ4-PO)]
Abstract
The reaction of Ru4(CO)13(µ3-PNCy2) 1 with Ru(CO)5 in refluxing hexane yields Ru5(CO)15(µ4-PNCy2) 2 in high yield; treatment of 2 with HBF4·Et2O forms Ru5(CO)15(µ4-PF) 3 which is the first cluster complex to contain a µ4-fluorophosphinidene ligand, while refluxing 2 with HBF4·H2O in CH2Cl2 yields 3 and the title compound [Ru5(CO)15(µ4-PO)][H2NCy2] 4, an unprecedented example of a cluster complex containing a µ4-PO ligand.