Kadesch, Richard G. published the artcileThe steric inhibition of resonance in aromatic carbonyl compounds, Name: 4-Iodobenzohydrazide, the publication is Journal of the American Chemical Society (1941), 1310-14, database is CAplus.
The d., ns and dielec. constants were measured of benzene solutions of acetophenone, acetylmesitylene, acetyldurene, BzH, mesitylaldehyde, BzCl, 2,4,6-Me3C6H2COCl and benzophenone. From these data it is shown by the method of Birtles and Hampson (cf. C. A. 31, 2198.9) that the resonance of compounds of the type PhCOR involving quinoid structures may be inhibited by 2 o-Me groups. This inhibition of resonance is purely a steric effect in which the o-Me groups block the attainment of the completely coplanar configuration necessary in the quinonoid structure. The steric effect depends on the size of the COR group, being absent in the small CHO group while COMe and COCl lead to readily observable effects.
Journal of the American Chemical Society published new progress about 39115-95-2. 39115-95-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Hydrazine,Amine,Benzene,Hydrazide,Amide, name is 4-Iodobenzohydrazide, and the molecular formula is C7H7IN2O, Name: 4-Iodobenzohydrazide.
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