| Abstract
| - Electrochemical reduction of aryldiazonium salts (in acetonitrile or acidic aqueous medium) on aniron or mild steel surface permits the strong bonding (which resists an ultrasonic cleaning) of aryl groups onthese surfaces. Attachment of aryl groups was demonstrated by the combined used of electrochemistry, infraredspectroscopy and polarization modulation infrared reflection spectroscopy (PMIRRAS), Rutherford backscattering, X-ray photoelectron spectroscopy, and capacity measurements. The substituents of aryl groups, whichcan be widely varied, include NO2, I, COOH, and long alkyl chains. It is shown that the attachment of the arylgroups is to an iron and not to an oxygen atom and that the bond is covalent.
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