Here’s the latest on the Gauche effect, based on available public literature up to now.
What is the Gauche effect? The Gauche effect refers to the unusual preference for gauche (60-degree) conformations in certain substituted alkanes or related systems, where such conformers can be more stable than the anti conformer under specific electronic or steric circumstances. This counterintuitive behavior has been explored extensively in organics and has several proposed explanations involving hyperconjugation, steric/Pauli repulsion, and orbital interactions.[3][4][9]
Recent conceptual refinements: Modern computational work emphasizes that hyperconjugative orbital interactions tend to favor gauche geometries across several halogen-substituted ethenes and alkanes, but the observed global conformer preference across a series (e.g., F vs Cl/Br/I) often depends on a balance with steric (Pauli) repulsion
We have quantum chemically investigated the rotational isomerism of 1,2‐dihaloethanes XCH2CH2X (X = F, Cl, Br, I) at ZORA‐BP86‐D3(BJ)/QZ4P. Our Kohn‐Sham molecular orbital (KS‐MO) analyses reveal that hyperconjugative orbital interactions favor the ...
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www.gaucher.org.ukatypical situation where groups separated by a torsion angle of approximately 60°, is more stable than 180°
www.wikidata.orgList of journal articles on the topic 'Gauche effect'. Scholarly publications with full text pdf download. Related research topic ideas.
www.grafiati.comGauche effect Main article: alkane stereochemistry The term "gauche" refers conformational isomers (conformers) where two vicinal groups are separated by a 60°
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