Table . Comparison of 13 C and N atom resonances 22-P•BSA, 22-P•10CSA(S) and 22-P•10CSA(SR) complexes. The ∆σmax (ppm) in 13 C and N atoms of 22-P•10CSA(S) recorded with 20 eq. of analyte. The signal positions were determined using various NMR techniques (CD3CN). Top left side, illustration of the 22-P (blueabove and red -below the plane) with corresponding positions. The highlighted positions in the illustration on the top right side shows ∆σ  0.3 ppm (atoms in blue are peripheral nitrogen atoms that did not resonate).