Electrochemical oxidation of benzene and biphenyl in liquid sulfur dioxide: formation of conductive deposits

✍ Scribed by M. Delamar; P.-C. Lacaze; J.-Y. Dumousseau; J.-E. Dubois

• Book ID: 103066307
• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 440 KB
• Volume: 27
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(82)80060-1

✦ Synopsis

The electrochemical oxidation of benzene and biphenyl in liquid SO2 on a platinum electrode results in the formation of passivating films when performed in the presence of a quaternary ammonium perchlorate as a background electrolyte. In contrast, when the electrolyte is a quatemary ammonium tetrafluoroborate, dendrite-like conducting deposits are obtained. Elemental analyses, ir and xps spectra show that the films and deposits are products of the polyphenylene type containing variable amounts of oxygen. The oxidation product of benzene obtained in the presence of BF, is not conductive in the dry state when it is purified and exempt from electrolyte (a < lo-* n-' cm-* ), whereas the unpurified product is fairly conductive in the dry state (a = 10m3 R-' cm-')_