NIR-FT-Raman spectra of some cobalt(III) ammine complexes

NIR-Raman spectra of [Co(NH 3 ) 5 H 2 O)]Cl 3 , [Co(NH 3 ) 5 OH]Cl 2 , [Co(NH 3 ) 5 Cl]Cl 2 and [Co(NH 3 ) 4 (H 2 O) 2 ] 2 -(SO 4 ) 3 are reported. Thermal decomposition was observed for the aquo complexes even using very low laser power. This decomposition is connected with the loss of H 2 O. Preliminary assignment of some metal ligand vibrations are proposed.