Synthesis and electrochemical properties of Pt(II) 5,7,12,14-tetramethyldibenzo[b,i][1,4,8,11]tetraaza[14]annulene: Factors affecting the electropolymerization rates

• Published in: Inorganica Chimica Acta Vol. 149; no. 1; pp. 69 - 76
• Main Authors: Hochgesang, Paul J., Bereman, Robert D.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.09.1988; Elsevier Science
• Subjects: Chemistry; Electrochemistry; Exact sciences and technology; General and physical chemistry; Kinetics and mechanism of reactions; Divalent metal Complexes; Oxidation reduction; Nitrogen heterocycle; Organic ligand; Transition metal; Transition metal Complexes; Experimental study; Carbon; Macrocycle; Quaternary ammonium compound; Cyclic voltammetry; Organic solvent; Non aqueous solution; Platinum; Electrochemical reaction; Disk electrode; Glassy state; Platinum II Complexes
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/S0020-1693(00)90569-3

The Pt complex of platinum dibenzotetraaza[14]annulene has been prepared from the reaction of the free base ligand with bis(dimethylsulfoxide)platinum(II) chloride. This represents one of the first 14 membered tetraazaannulene macrocyclic complexes reported. The electrochemical properties of platinum 5,7,12,14-tetramethyldibenzo[b,i][1,4,8,11]tetraaza[14]annulene were characterized by cyclic voltammetry. The platinum tetraazaannulene as well as a Pd(II) analog, have been found to form films on electrode surfaces during cyclic voltammetry. These films form either by constant potential electrolysis at +1.4 V, by cycling from 0.0 to +1.4 V, or by cycling from +1.4 to −2.0 V ( versus SCE). Films can be made to form on several electrode surfaces as well as in various solvents and with a variety of tetraalkylammonium salts as electrolytes. The amount of film grown depends on the method of deposition, the solvent and the rate of cycling. As part of the study, a quantitative analyses of the effects of solvents, scan rate, electrode, scan range and electrolytes or the amount of film actually formed on the electrode was carried out.