Why does PLATON give n/a for P2 and P3 values?
The P2 and P3 calculations assume that the structure is known to be a pure enantiomer or a 50/50 racemate or a pure enantiomer, respectively. If the calculations of y and G show that this assumption is likely false, PLATON will refuse to calculate P2 and P3 values. Most likely, therefore, if you get “n/a” you are dealing with an inversion twin with a ratio that differs from 1:1.
