Potassium hexanitratocobaltate(III)

Abstract

Potassium hexanitratocobaltate(III) has been prepared by treating potassium hexafluorocobaltate(III) with dinitrogen pentaoxide at 273 K. Solution properties of the product in water and anhydrous organic solvents are reported. The product has been characterized by its magnetic susceptibility, and by i.r. and electronic spectra. These properties are clearly consistent with an octahedrally co-ordinated t_2g⁶ low-spin complex ion. Decomposition of the product in acetonitrile has been monitored by electronic spectroscopy.