V. Stackelberg

In June, 1951, a brief description of the present structure was communicated by letter to Prof. W. H. Rodebush and Dr. W. F. Claussen. The structure was then independently constructed by Dr. Claussen, who has published a note on it (J. Chem. Phys., 19, 1425 (1951)). Dr. Claussen has kindly informed us that the structure has also been discovered by H. R. Muller and M. v. Stackelberg,... 

Schmidt, H., u. M, v. Stackelberg Uber den EinfluB des Ohmschen Wider-... 

Prominent examples are the redox pairs o- or p-quinones/hydroquinones, the corresponding quinoneimines, the diimines and the azobenzenes and disulfides [68]. V. Stackelberg [69] has pointed out that the exclusive formation or cleavage of 0-H, N-H, S-H, or S-S bonds is a necessary precondition for reversible organic redox partners. This can be clearly recognized in the case of the quinone/hydroquinone redox reaction (cf. Eq. (13)). Only O -H bonds are formed or cleaved. In contrast, in the case of the acetone/isopropanol redox system, 0-H and C-H bonds participate. 

If the oxidized or reduced form of an electroactive substance undergoes a chemical reaction in solution, this chemical reaction competes with the transport of the species towards the surface of the electrode. The chemical reactions involving the electroactive substance can precede or occur in parallel with or be consecutive to the electrode process proper. General information can be found in monographs (Heyrovsky and Khta, 1966 Delahay, 1954 Mairanovskii, 1966) and reviews (Brdi5ka, 1954 BrdiCka et al., 1962 Niirnberg and v. Stackelberg, 1961). 

Abb. 2 3. Hohlraum 1. Art derGashydrate. Die 24 HjO-Molekuleliegen auf derOber-flache eines Wflrfels (singezeichnetj [nach v.STACKELBERG (53)]. 

An analogous equation was derived later by MacGillavry and Rideal (30) who considered spherical diffusion, but used a simplified treatment, and by v. Stackelberg (31)(Figure 7) who combined an expression for the thickness of a diffusion layer with Pick s law. 

Figure 7. B. Breyer and M. v. Stackelberg, on board a ship on Elbe during the Conference on Polarography, Dresden, 1957.

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