Reduction of Ag(I) by 1-acyl-2-arylhydrazines: Mechanism of photographic infectious development

Add time:08/03/2019    Source:sciencedirect.com

The photographic process of ‘infectious development’ in which 1-acyl-2-arylhydrazines reduce Ag(I) has been studied using analogues. 1-Acyl-2-aryldiazenes, resulting from oxidation of 1-acyl-2-arylhydrazines, are hydrolysed to anions of aryldiazenes (ArN=NH), which undergo further oxidation with loss of nitrogen to yield aryl radicals. The aryl radicals cause ‘feedback inhibition’ which is prevented by the addition of benzhydrol.

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