Does the Intramolecular Hydrogen Bond Affect the Spectroscopic Properties of Bicyclic Diazole Heterocycles?

Figure 1

Molecular graphs (representation of bonding interactions according to QTAIM results) of the system analyzed in this study: 23 (a), 22 (b), and 21 (c). The dotted line corresponds to a bond path.

(a)

(b)

(c)