Transition-metal tetra-oxo-complexes and their vibrational spectra

Abstract

The vibrational spectra of a number of transition metal tetra-oxo-complexes are reported for the first time, including those of salts containing the anions [RuO₄]^–; [MO₄]^2–(M = Mn, Fe, or Ru); [MO₄]^3–(M = Cr, Mn, Re, or Fe); and [MO₄]^4–(M = Ti, V, Cr, Mo, W, Fe, or Co). From these measurements and published data on the fundamental frequencies of other such ions we calculate force constants for most of the known transition-metal tetra-oxoanions. Raman data on [Cr¹⁸O₄]^2– and [W¹⁸O₄]^2– are also presented