Redox interconversion

Attempts to prepare thiosulfuric acid by acidification of stable thiosulfates are invariably thwarted by the ready decomposition of the free acid in the presence of water. The reaction is extremely complex and depends on the conditions used, being dominated by numerous redox interconversions amongst the products these can include sulfur (partly as cyclo-Sf,), SO2, H2S, HiS,. H2SO4 and various polythionates In the absence of water, however, these reactions are avoided and the parent acid is more stable it decomposes quantitatively below 0° according... 

Figure 3 Ligand-centered redox interconversions of [ Ru(bipy)2 3(/i-L22)]n+ ( = 3-6) (potentials vs. SCE), and the resulting electrochromic behavior. Spectra were measured at 243 K in MeCN.192...

Trotti, D., Nussberger, S., Volterra, A., and Hediger, M. A. (1997) Differential modulation of the uptake currents by redox interconversion of cysteine residues in the human neuronal glutamate transporter EAAC1. Eur. J. Neurosci. 9,2207-2212. 

A few years later, Cha, Murray and Klinman published a report on isotope effects in the redox interconversion of benzyl alcohol-benzaldehyde/NAD -NADH, with catalysis by yeast alcohol dehydrogenase. This article effected among biochemists... 

Photo-electroswitching takes place in substances where an electrochemical change induces more or less pronounced variations in light absorption or emission properties. This occurs namely for metal complexes subjected to redox interconversion between their various oxidation states. A two-component device combining a luminescent centre and an electroactive unit may function as a photo-electroswitch in which the emission properties are modulated by redox interconversion via energy or electron transfer quenching (Figure 30). 

TTHE COPPER(II) AND COPPER(I) IONS undergo facile redox interconversions for which the standard reduction potential is highly dependent on the nature of the ligands and coordination geometries observed (1). Thus, copper ion is a useful electron transfer or oxidation catalyst in the presence of dioxygen (02) (2-4). These properties have been put to advantage by nature, where copper-containing proteins (5-11) exist as electron... 

The pentoses, such as xylose (Xyl), that result from the hydrolysis of lignocel-lulose (see above) resist fermentation by Saccharomyces, because it lacks an efficient mechanism to convert Xyl into xylulose (Xlu). The isomerization redox interconversion pathway of Xyl and Xlu, via xylitol, that is native to Saccharomyces, is inefficient due to a cofactor incompatibility (see Fig. 8.5) and results in a redox imbalance and the accumulation of xylitol [24]. Many bacteria, in contrast,... 

Scheme 5. Synthesis of HNCC of nickel by reduction of Ni(CO>4 and some redox interconversions between these clusters.

Scheme 5.26 Redox interconversions of carbocation, carbon radical, and carbanion...

The redox interconversions of Fe4S4 sites illustrating the three-state model. The states are found in (A) oxidized HiPIP (B) reduced HiPIP and oxidized ferredoxin (C) reduced ferredoxin. 

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