Abstract
The infrared spectra of the complexes [Ru(NH3)6]X2 and [Ru(NH3)6]X3, where X = Cl, Br, I, BF4 and [Ru(NH3)5X]X2, where X = Cl, Br and I, have been measured in the solid state between 4 000 – 250 cm−1. Assignments have been made for the observed absorption bands. The metal–nitrogen stretching vibrations were observed between 485–424 cm−1 for the ruthenium(III) complexes but were not observed for the ruthenium(II) complexes in this region.