You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
strain
In organic chemistry, ring strain is a type of instability that exists when bonds in a molecule form angles that are abnormal. Strain is most commonly discussed for small rings such as cyclopropanes and cyclobutanes, whose internal angles are substantially smaller than the idealized value of approximately 109°. Because of their high strain, the heat of combustion for these small rings is elevated.Ring strain results from a combination of angle strain, conformational strain or Pitzer strain (torsional eclipsing interactions), and transannular strain, also known as van der Waals strain or Prelog strain. The simplest examples of angle strain are small cycloalkanes such as cyclopropane and cyclobutane.
Ring strain energy can be attributed to the energy required for the distortion of bond and bond angles in order to close a ring.Ring strain energy is believed to be the cause of accelerated rates in altering ring reactions. Its interactions with traditional bond energies change the enthalpies of compounds effecting the kinetics and thermodynamics of ring strain reactions.
Is it just me?
I have tried million different adjustments in the seat but couldn’t get the head rest in a comfortable position. At any position, it always keeps my head pushed little forward than i would like putting a strain on my neck. I would be more than happy without one but it’s illegal i...
Hi folks,
I’m new around here.
I’ve had my MG4 Trophy LR for 2 months now, and I love it.
The only issue I’ve got is the reflection on the windscreen when driving.
I have a distinct reflection and I have to wear sunglasses throughout the day (regardless of the weather) to avoid getting eye...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.