Figure 10.
Analysis of S–H/π interactions with the S–H bond length normalized to 1.338 Å. Definitions are as in Figure 9. The 2.90 Å sum of the C and H van der Waals radii is indicated by the line (a radius of 2.90 Å centered on the aromatic C, which is 1.40 Å from the centroid (•) of the ring). (a) Comparison of the distance of the thiol hydrogen from the plane of the ring (dplane) as a function of aromatic plane-projected distance from the centroid of the ring. (b) S→H bond vectors for all thiols.