Surprisingly, the H4-C2 bond share in the vibrational energy of the system appears to be negative for this bond in the TS region (Fig. ). The C2-N1 bond gains more strength near the end of the process (Fig. ), while C2-O3 bond does not Fig. : the well understood chemistry of this process is formidably illustrated by the above diagrams inasmuch as C2-N1 and C2-O3 bonds are considered. On the other hand, the non-negligible interaction between the moving proton H4 and C2 atom is an intriguing discovery of the method. The contradictory changes around C2 atom explain the flat curve for the fragility of this atom (Fig. ).