Nicotinic acid and their complex combinations with copper and cobalt acetate were characterized using Raman and SERS spectroscopy.FT-Raman spectra emphasize significant differences in the wavenumber and intensity of aromatic system bands and in the ranges of the ring modes upon coordination. SERS results revealed chemisorptions of the ligand species through the hydroxyl groups with respect to the metal surface. The differences between the chemisorbed oriented geometry and the coordinated ligand are discussed.