What are conformations of ethane?
In the eclipsed conformation, the C-H bonds on the front and back carbons are aligned with each other with dihedral angles of 0 degrees. In the staggered conformation, the C-H bonds on the rear carbon lie between those on the front carbon with dihedral angles of 60 degrees.
What is sawhorse conformation?
Representation of Eclipsed and Staggered Conformation: Sawhorse Projections: In this type of projection, the bond between carbon atoms is shown as a long straight line. These lines are elevated to each other at an angle of 120° to each other.
What is sawhorse projection give an example?
In a sawhorse projection, a molecule is viewed from an angle, rather than side-on. For example, imagine looking at model 1 of ethane below at an angle so that the carbon atom highlighted in red is further from you, and the carbon atom in grey is closer to you.
Which one is more stable staggered or eclipsed?
hydrocarbons. …with respect to the other—the eclipsed conformation is the least stable, and the staggered conformation is the most stable. The eclipsed conformation is said to suffer torsional strain because of repulsive forces between electron pairs in the C―H bonds of adjacent carbons.
What is the difference between Newman and sawhorse projection?
A sawhorse projection is similar to a Newman projection, but it shows the carbon-carbon bond that is hidden in a Newman projection. Just as with Newman projections, you can draw sawhorse projections in eclipsed and staggered conformations. Below is a sawhorse projection of the gauche conformation of butane.
Which is more stable ethane or Newman and sawhorse?
Draw Newman and Sawhorse projections for the eclipsed and staggered conformations of ethane. Which of these conformations is more stable and why? Draw Newman and Sawhorse projections for the eclipsed and staggered conformations of ethane. Which of these conformations is more stable and why?
How does the staggered conformation of ethane work?
The ethane molecule in the eclipsed conformation is said to undergo the torsion strain and by a rotation around the carbon-carbon bond to the staggered conformation around 12.5 kJ/ mol of torsion, energy is released. 2. Staggered Conformation
How did the sawhorse projection get its name?
Sawhorse projection: A representation of a molecule in a particular conformation looking down a C-C bond from an angle. Substituents are shown at 120° bond angles. The sawhorse projection got its name because of its resemblance to a woodworking sawhorse.
How to draw sawhorse projection for butane conformer?
Exercise: Draw the sawhorse projection for the butane conformer shown below. Click on the tabs for hints. Identify the atoms that are in the plane of the page. Use Up/Down Arrow keys to increase or decrease volume. Rotate the structure downwards by 45 o, then towards you by 45 o. Use Up/Down Arrow keys to increase or decrease volume.