Auger electron spectroscopic evidence for the racemic adsorption of tris(1,10-phenanthroline)iron(II) on sodium montmorillonite
Abstract
Auger electron spectroscopy is used to prove that enantiomeric Fe(phen)32+(phen = 1,10-phenanthroline) is adsorbed as dipositive Fe(phen)32+ on a montmorillonite, while racemic Fe(phen)32+ is adsorbed as a monopositive ion-pair with an external anion or Fe(phen)32+·X–with X = antimonyl (+)-tartrate in the present case.