“…type interactions [ 47 ]. The same group observed similar π-type interactions in pyridinium-carboxylate salts [ 48 ], whilst noncovalent interactions (C–H⋯O and O–H⋯O interactions) have also been reported in metal (Co, Cu) complexes derived from 1,3-diamino-2-hydroxypropanetetraacetate [ 49 ]. In some of these systems, Hirshfeld surfaces and 2D fingerprint plots [ 50 ] were employed to quantify the intermolecular interactions.…”