Surface-enhanced resonance Raman spectroscopic studies of the Cd(II) and Hg(II) complexes of 1-(2-pyridylazo)-2-naphthol adsorbed on solver sol

The resonance Raman (RR) and surface-enhanced resonance Raman (SERRS) spectra of M(PAN)2 complexes (M=Cd and Hg, PAN(super -) =1-(2-pyridylazo)-2naphtholate were reported and assigned, and the nature if the adsorbed species were determined. Alterations in the Raman spectrum upon adsorption were interpreted by ab initio calculations of the interaction of M(PAN)2 complexes with surface silver atoms binding through the azo group alpha-nitrogen atoms.