Module 2 : Analyse Conformationnelle
- Page ID
- 126847
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Thumbnail: The ethane molecule spends 99% of its time in a specific conformation. The so-called staggered conformation is reached if, when the molecule is seen from a position on the C-C axis (as in the second half of the animation), the H atoms of the front C atom are exactly between the H atoms of the other C atom. This conformation is energetically favored for quantum mechanical reasons, rather than the old textbook notion of steric hindrance. Thus, the molecule spends most of the time in that conformation, regardless of pushes from other molecules around it (Pophristic, V. & Goodman, L. Nature 411, 565–568 (2001)). Image used with permission (CC BY 2.5 Generic; ralf@ark.in-berlin.de).