Research Article

Anion-Dependent Synthesis of Cu(II) Complexes with 2-(1H-Tetrazol-5-yl)-1H-indole: Synthesis, X-Ray Structures, and Radical Scavenging Activity

Figure 3

(a) ORTEP drawing of 50% probability with atom-numbering scheme for the asymmetric unit of 2. (b) The part of the crystal structure showing the formation of supramolecular dimers through the hydrogen bonds and π-π stacking, only the hydrogen atoms bonded to nitrogen and oxygen are shown.