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steric factor
This term is used exclusively within the fields of chemistry and molecular biology to describe the physical space occupied by atoms. It refers to the "crowding" effect where large groups of atoms physically block a reaction site, preventing other molecules from bonding. This is a distinct concept from electronic effects, which deal with charge and electronegativity rather than physical volume.
In technical literature, the term is often used interchangeably with "steric hindrance." While "steric factor" typically refers to the quantitative or qualitative influence on a reaction rate, "hindrance" emphasizes the obstruction itself. Because it is a specialized scientific term, it is never used in casual conversation or non-technical contexts.
Ý nghĩa
Ví dụ
The reaction rate decreased significantly due to the steric factor of the bulky tert-butyl group.
We need to consider the steric factor when choosing the right ligand for this catalyst.
I wonder if the steric factor is the primary reason for this unexpected regioselectivity.
Look at how the steric factor prevents the nucleophile from attacking the carbonyl carbon.
The steric factor plays a crucial role in determining the stability of the transition state.
Is it possible that a steric factor is blocking the active site of the enzyme?
The chemist noted that the steric factor outweighed the electronic effects in this specific case.