*2.3. Hirshfeld Surfaces*

The Hirshfeld surface analyses were carried out using the program CrystalExplorer 17.5 (University of Western Australia, Perth, Australia) [38,39]. The normalized contact distances (dnorm) were mapped into the Hirshfeld surface, which enabled the visualization of intermolecular interactions by using different colors. In the color scale, the red color denotes closest contact because it indicates the sum of di (the distance from the surface to the nearest nucleus internal to the surface) and *d<sup>e</sup>* (the distance from the surface to the nearest nucleus external to the surface) and de is shorter than the sum of the relevant van der Waals radii. On the other hand, the white and blue color represent the weak and negligible intermolecular interactions, respectively. The Hirshfeld surfaces and their associated two-dimensional fingerprint plots were used to quantify the various intermolecular interactions in the title compound.
