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In chemistry, a molecule experiences strain when its chemical structure undergoes some stress which raises its internal energy in comparison to a strain-free reference compound. The internal energy of a molecule consists of all the energy stored within it.
Strain energy is the potential energy absorbed by the body due to the deformation or strain effect. It is denoted by the symbol uppercase letter ‘U’. The strain energy absorbed by the material is equal to the work required to create the deformation in the object.
Summary. The energy stored within a material when work has been done on it is termed the strain energy or resilience, i.e. strain energy = work done. In general there are four types of loading which can be applied to a material: 1. Direct load (tension or compression)
The increase in energy resulting from eclipsing groups on adjacent carbons is called Torsional Strain. And in order for this to be considered torsional strain, it needs to be an energy increase of small eclipsing groups – H/H, or H /CH 3.
When molecules are forced to adopt some condition that is not ‘ideal’, they experience strain. Experiencing strain raises the amount of energy needed to exist. There are several common types of strain that molecules may experience. 3.4.1. Angle Strain. Angle Strain arises from bond angles deviating from their ideal values.
Strain has a unique and sometimes unpredictable impact on the properties and reactivity of molecules. To thoroughly describe strain in molecules, a computational tool that relates strain energy to reactivity by localizing and quantifying strain was developed.
Strain is an important concept in organic chemistry, often the most important factor in determining molecular structure. In this article, we explore the different types of strain and how each affects structure and molecular energy.
