In organic chemistry, ring strain is a type of instability that exists when bonds in a molecule form Adolf von Baeyer received a Nobel Prize in for the discovery of the Baeyer strain theory, which was an explanation of the relative stabilities. Sachse Mohr’s theory (Theory of strainless rings). ❖ Baeyer’s Strain Theory. – Baeyer postulated that any deviation of bond angles from the normal tetrahedral . Baeyer Strain Theory. In , Adolf von Baeyer published a paper on polyacetylene compounds in the journal of the German Chemical Society. At the end of.
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Strain theoryin chemistrya proposal made in by the German chemist Adolf von Baeyer that the stability of carbocyclic compounds i. The amount of deviation is the measure of the strain of the ring: Baeyer postulated that these rings are planar and concluded that strain exists in three- and four-membered rings and in rings of six or more atoms, the strain increasing with the size of the ring. Another German chemist, H.
Sachse, in suggested that in rings of six or more atoms the strain can be relieved completely if the ring is not planar but puckered, as in the so-called chair and boat conformations of cyclohexane. These large rings should then be as stable as those of five atoms—a conclusion that has been verified experimentally.
For example, no significant difference referable to strain has been found between the stability of cyclotriacontane, with 30 atoms in the ring, and that of cyclopentane, with only 5. We welcome suggested improvements to any of our articles.
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Ring strain – Wikipedia
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