Question

In the R-S notation, the prefixes R and S stands for_____________________​

Answer 1

Answer:

A counterclockwise direction is an S (sinister, Latin for left) configuration. A clockwise direction is an R (rectus, Latin for right)

Answer 2

In the system of R-S nomenclature, R stands for Latin rectus and S stands for Latin sinister

• The RS nomenclature (Cahn-Ingold-Prelog priority rules) is a system of naming compounds in chemistry on the basis of the configuration of compounds around a central atom depending upon their molecular weights.
• R stands for right-handed or Latin rectus while S stands for Latin sinister meaning left-handed.
• If the priority order of the groups (1,2,3..) in the compound rotates in a clockwise fashion, it is named an R isomer and if it rotates in an anti-clockwise fashion, it is termed as an S isomer.

Thus, R stands for right-handed (Latin rectus) and S stands for left-handed (Latin sinister) in the RS nomenclature.