Torsional Strain

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Monica Habashy 3A
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Torsional Strain

Postby Monica Habashy 3A » Wed Mar 08, 2017 5:17 pm

I'm a little confused as to what torsional strain is. Can anyone explain it?

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Re: Torsional Strain

Postby MelanieAu1G » Wed Mar 08, 2017 5:57 pm

When considering the conformations of molecules (e.g. alkanes, alkenes, and alkynes), torsional strain is defined as the force that opposes rotation of a part of a molecule about a bond. Today, Dr. Lavelle used the analogy of a wrench as an example to demonstrate what it is similar to; think of the torque that accompanies turning a wrench and the resistance that occurs as one tightens the bolt with said wrench. Due to electron repulsion and the configuration of the conformations, torsional strain occurs as a byproduct. It is essentially resistance that occurs when rotating the atoms on opposing sides of a molecule.

Xin Huang 3E
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Re: Torsional Strain

Postby Xin Huang 3E » Sat Mar 18, 2017 4:56 pm

Why would this restrain also resist the rotating from higher energy to lower, namely from eclipses conformation to staggered?

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