Vibrational spectroscopic investigations of some Hofmann-T(d)-type complexes: Ni(2-(1-cyclohexenyl)ethylamine)(2)M(CN)(4) (M=Cd or Hg).

New Hofmann-T(d)- type complexes in the form of Ni(CyHEA)(2)M(CN)(4) (where CyHEA=2-(1-cyclohexenyl)ethylamine and M=Cd or Hg) have been prepared in powder form and their infrared (4000-100cm(-1)) and Raman (2800-1650cm(-1)) spectra have been reported. The thermal behaviour of these complexes has been investigated by differential thermal analysis (DTA) and thermo-gravimetric analysis (TGA). The results suggest that these compounds are similar in structure to the Hofmann-T(d)-type complexes.