Hi All,
When doing the Newman Projections and looking at whether a conformation is staggered or eclipsed, I was wondering how you measure the stability of a projection. Is it based on the angles between the substituents or is it based on whether or not the substituents are eclipsed vs. staggered?
Thanks!
Stability of the Formation
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 55
- Joined: Wed Sep 21, 2016 2:57 pm
Re: Stability of the Formation
The most stable conformation is when the "bulkiest" substitutents have a 180° dihedral angle between them, i.e. they are on opposite sides of the Newman projection. By "bulkiest" I mean something other than H.
-
- Posts: 21
- Joined: Wed Sep 21, 2016 2:56 pm
Re: Stability of the Formation
But when you look at the gauche conformation that is staggered with an angle of 60° versus the eclipsed by H conformation where it is eclipsed but the angle is at 120°, which one would be the more stable conformation?
-
- Posts: 11
- Joined: Wed Nov 18, 2015 3:00 am
Re: Stability of the Formation
The gauche conformation would be more stable. Because the eclipsed has steric interactions and I believe torsional interactions.
Nicole Gamboa 2M wrote:But when you look at the gauche conformation that is staggered with an angle of 60° versus the eclipsed by H conformation where it is eclipsed but the angle is at 120°, which one would be the more stable conformation?
Return to “*Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)”
Who is online
Users browsing this forum: No registered users and 1 guest