Question icon
Grade 12Physical Chemistry

what is torsional strain??
what is energy barrier to rotation??

Profile image of Ankur Saha
9 Years agoGrade 12
Answers icon

1 Answer

Profile image of Umakant biswal
9 Years ago
dear aman
Torsional strain
 or eclipsing strain is the increase in potential energy of a molecule due to repulsion between electrons in bonds that do not share an atom. 
there is a diffrence in energy in the most stable as well as least stable conformations when considering rotation around a bond . 
it is the energy barrier which needs to be overcome for one full rotation around a bond . 
thatswhat is called as energy barrier of rotation , if less energy that that , then it will not rotate , 
HOPE IT CLEARS 
REGARDS