Figure 3

Distributions of the distance of \({R}_{1}\), \({R}_{2}\), and \({R}_{3}\) in TDS1, TDS2, and TDS3 in 310 K. The unit is in Å. The distance of 3.0 Å is an upper limiting length to form a weak hydrogen bonding. It is necessary to keep a distance of ≤2.0 Å for forming a strong hydrogen bond.