摘要:
The reaction of [Ru(C5Me5)Cl]4 with enones and enals can lead to pale yellow half-open ruthenocenes incorporating oxo dienyl ligands In addition to these products, it is possible in some cases to isolate significant quantities of other compounds, in which CO has been abstracted from the oxo dienyl ligand, and coordinates to one or more ruthenium centers, along with the remaining fragment of the oxo dienyl ligand. Isolated in this fashion were Ru(C5Me5)(2-CH3C3H4)(CO), Ru2(C5Me5)2(mu2-HC2CH3)(mu2-CO), and the closo ''methylcyclopropenyl'' cluster RU3(C5Me5)3[C3H2(CH3)](mu3-CO). Single crystal structural determinations have been carried out for the last two compounds. For the dimetallic compound, the space group is P1BAR, with a = 9.247(3) angstrom, b = 10.208(3) angstrom, c = 13.729(2) angstrom, alpha = 72.96(2)-degrees, beta = 98.73(2)-degrees, gamma = 114.92(2)-degrees, and V = 1123.1 angstrom3, for Z = 2, while for the trimetallic compound, the space group is P1BAR with a = 8.605(1) angstrom, b = 11.076(l) angstrom, c = 18.051(2) angstrom, alpha = 89.33(1)-degrees, beta = 95.55(1)-degrees, gamma = 108.09(l)-degrees, and V = 1627.6 A3 for Z = 2.