The effects of solvent and electrolyte in the surface enhanced Raman spectrum of iron(II)bis(1,10 phenanthroline)dicyano: evidence for the formation of strong ion-pairs - Corio, Paola; Temperini, Márcia Laudelina Arruda; Rubim, Joel Camargo; Santos, Paulo Sérgio (Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 1999)