Organic Chemistry> RS nomenclature for R configuration which...

RS nomenclature for R configuration which direction we have to take clock wise or anti clock wise

tejith , 6 Years ago

Grade 12th pass

4 Answers

Saurabh Koranglekar

Dear student

It is clockwise for R

Regards

Last Activity: 6 Years ago

Khimraj

If the arrow points in a counterclockwise direction ( left when leaving the 12 o' clock position), the configuration at stereocenter is considered S ("Sinister" → Latin= "left"). If, however, the arrow points clockwise,( Right when leaving the 12 o' clock position) then the stereocenter is labeled R ("Rectus" → Latin= "right"). The R or S is then added as a prefix, in parenthesis, to the name of the enantiomer of interest.

Last Activity: 6 Years ago

Apurva Sharma

there can be two cases here:

when the least priority group is on the horizontal line and we move from 1^st priority to 2^nd. clockwise is S and anticlockwise is R
when the least priority is at vertical line then moving from 1^st priority to 2^nd cloclwise is R and anticlockwise is S

Last Activity: 6 Years ago