Infrared and electronic spectra of matrix isolated chalcogenide halides of tungsten(VI), WYX4(Y = S or Se; X = F, Cl, or Br)

Abstract

Characteristic i.r. fundamentals have been observed for the six tungsten thin- and seleno-tetrahalides WSF₄, WSeF₄, WSCl₄, WSeCl₄, WSBr₄, and WSeBr₄, isolated as monomers in nitrogen matrices. The electronic spectra of these species have similarly been recorded, and the principal features assigned on the basis of vibrational fine-structure. The results are compared with data previously obtained for the tungsten oxotetrahalides.