“…The main reason for the discrepancy in hydrogen bonding distance results from the increased acidity (increased donor ability) of the 2aminopyridyl ligand. [36][37][38] In addition, weak interaction studies reveal the presence of various CH...Cl, CH...π, π...π interactions in the solid state. Interestingly, in complex 3 it is observed that distances between CH...Cl, CH...π, π...π are 2.71-2.84, 2.58-2.83 and 3.83-3.84 Å, respectively and result in a grid 2D sheet Complex 4 shows distances between CH...Cl, π...π as 2.71-2.84, 3.83-3.84 Å, respectively and result in a grid 2D sheet but without CH...π interaction.…”