SYNTHESIS AND CHARACTERIZATION OF RUTHENIUM COMPLEXES CONTAINING TRIDENTATE P3O93-, NB2W4O194-, AND CP-ASTERISK-TIW5O183- LIGANDS

Seven new ruthenium complexes containing tridentate oxygen ligands hav e been prepared: [(C6H6)Ru(P3O9)]-[N(C4H9)4] (1), [(p-cymene)Ru(P3O9)] [N(C4H9)4] (2), [(p-cymene)Ru(Nb2W4O19)] [N(C4H9)4]2 (3), [(C6H6)-Ru( CpTiW5O18)][N(C4H9)4](4), [(CH3CN)3Ru(P3O9)][N(C4H9)4].CH3CN (5), [(C 8H12)Ru(NH2NC(CH3)2)-(P3O9)][N(C4H9)4].CH3COCH3 (6), and [(C8H12)Ru(CH 3CN)(P3O9)][N(C4H9)4].0.5H2O (7). Two of these compounds were structur ally characterized using single-crystal X-ray diffraction techniques: compound 5 [a = 24.564(4) angstrom, b = 9.222(2) angstrom, c = 15.693( 3) angstrom, Z = 4, space group Pca2(1)-C5(2v) (No. 29)] and compound 6 [a = 10.969(2) angstrom, b = 11.230(2) angstrom, c = 17.021(3) angst rom, alpha = 74.87(2)-degrees, beta = 74.98(2)-degrees, gamma = 76.18( 2)-degrees, Z = 2, space group P1BAR-Cli (No. 2)]. The remaining compl exes were formulated and assigned structures on the basis of their ele mental composition and the similarity of their infrared spectra and mu ltinuclear NMR spectra with those of isostructural species whose molec ular structures have been established crystallographically.