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

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

Grade:12th pass

4 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
Dear student

It is clockwise for R

Regards
Khimraj
3007 Points
4 years ago
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.
Apurva Sharma
220 Points
4 years ago
there can be two cases here:
  1. ​when the least priority group is on the horizontal line and we move from 1st  priority to 2nd. clockwise is S and anticlockwise is R
  2. when the least priority is at vertical line then moving from 1st priority to 2nd cloclwise is R and anticlockwise is S
Ankshumita Chakraborty
30 Points
4 years ago
A

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