Polynuclear nitrido-complexes of osmium, ruthenium, and iridium
Abstract
The preparation and physical properties are reported of a number of new binuclear µ-nitrido-complexes of osmium and ruthenium, of the form [M2IVNX8(H2O)2]3–(M = Os or Ru; X = Cl or Br); [Ru2N(NCS)8(H2O)2]3–; [Ru2N(NO2)6(OH)2(H2O)2]3–; [Os2N(NH3)8X2]3+(X = Cl, Br, l, NCS, NO3, or N3); [Ru2N(NH3)8X2]3+(X = Cl, Br, or NO3); [Ru2N(NH3)6X3(H2O)]2+(X = Cl, NCS, or N3). The vibrational spectra suggest that these structures contain linear M–N–M units. Studies of the vibrational spectra of the trimeric species Os3N3(NH3)4(OH)9 and salts containg the [Ir3N(SO4)6(H2O)3]4–,[Ir3N(SO4)6(OH)3]7–, and [Ir3NCl12(H2O)3]4– ions are also reported. The vibrational spectra of mono- and poly-nuclear nitrido-complexes are compared with those of the analogous oxy-systems.