Polarography, viii

A study of the electrochemical oxidation and reduction of certain isoindoles (and isobenzofurans) has been made, using cyclic voltammetry. The reduction wave was found to be twice the height of the oxidation wave, and conventional polarography confirmed that reduction involved a two-electron transfer. Peak potential measurements and electrochemiluminescence intensities (see Section IV, E) are consistent vidth cation radicals as intermediates. The relatively long lifetime of these intermediates is attributed to steric shielding by the phenyl groups rather than electron delocalization (Table VIII). 

Table VII is an index to the techniques employed. For the sake of brevity polarography is excluded from It, as pure water Is from Table VI and as the dropping mercury electrode is from Table VIII, but for each of the other fifty-odd techniques that are included in this volume an entry like...

Refs. [i] Brdicka R (1933) Coll Czech Chem Common 5 112 [ii] Brdicka R (1937) Nature 139 1020 [Hi] Brdilka R (1947) Research 1 25 [iv[ Brdicka R, Bfezina M, Kalous V (1965) Talanta 12 1149 [v] Muller OH (1963) Polarographic analysis of proteins, amino acids and other compounds by means of Brdicka reaction. In Click D (ed) Methods of biochemical analysis, vol. 11. Interscience, New York, pp 329-403 [vi[ Homolka / (1971) Polarography of proteins, analytical principles and applications in biological and clinical chemistry. In Click D (ed) Methods in biochemical analysis, vol. 19. Wiley, New York, pp 436-555 [vii] Hart IP (1990) Electroanalysis of biologically important compounds. Ellis Horwood, New York, p 92 [viii] Brabec V, Vetterl Y, Vrana O (1996) Electroanalysis of biomacromolecules. In Brabec Y, WalzD, Milazzo C (eds) Techniques in bioelectrochemistry, vol. 3. Birkhduser Yerlag Basel, p 287 [ix] Luo D, Lan ], Zhou C, Luo C (2003) Anal Chem 75 6346 [x] Brdicka R (1942) Z Elektrochem 48 278 [xi] Brdicka R, Wiesner K (1947) Coll Czech Chem Common... 

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