Due to the steric crowding the tetrahedral inter-mediate can't be form and thus esterification can't take place;this is called steric retardation.
When an atom comes too close to another atom, their electron clouds overlap and repel, this state is unfavorable and is characterized by higher energy.
The structures and properties can be used to describe the relation between a steric hindrance and reactivity.
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Pseudo-retardation would be something that resembles or looks like retardation, but actually isn't. The term literally means, fake retardation.
No a dimple is not a sign of retardation.
Retardation = change in vel / time taken
For Sn1 reaction the rate usually increases due to steric acceleration. For example the more methyl groups a compound has i.e the more tertiary it is the faster the rate of reaction will be for an Sn1 reaction.
The SI unit of retardation is meter per second squared or m/s^2.
Overstudy does not cause mental retardation.
Retardation - 2015 was released on: USA: 2015
chair form as the steric repulsions is minimum