Supramolecular Analysis of Three Anhydrous Organic Salts Derived from 8-Aminoquinoline and Acid Co-formers-Saccharin, Trichloroacetic Acid, and Naphthalene-1,5-Disulfonic Acid

Abstract

Three anhydrous organic salts derived from 8-aminoquinoline and acid conformers like saccharin, trichloroacetic acid, and naphthalene-1,5-disulfonic acid have been synthesized and characterized by elemental analysis (EA), spectroscopic techniques (FTIR), and Single-crystal X-ray diffraction (SCXRD) method. Salt 1 crystallizes as the orthorhombic, space group Pca2(1), V = 2971.7(5) ų, Z = 8. Salt 2 crystallizes according to the triclinic, space group Pī, V = 648.97(9) ų, Z = 2. Salt 3 crystallizes into the triclinic, space group Pī, V = 626.24(10) ų, Z = 1. All were 3D nets, and contained the non-covalently bonded substructures of 1D chain and 2D sheet. Checking of all the crystal stackings tells that there established the N–H···O H-bonds between the acids and the AQ. Apart from the traditional H-bonds, the auxiliary stretching linkages embracing the CH···O, Cl···O, Cl···Cl, CH···π, NH···π, O···π, and π···π linkages also have critical roles in the spatial expansions. On account of the subtle balance of the various nonbonding associations the hetero synthons R₁²(4), R₂¹(7), R₂²(7), R₂²(14), R₄³(11), R₄²(8), R₄²(10), R₄⁴(12), R₄⁴(18), R₄⁴(26), R₄⁴(30), R₅⁴(18), R₅⁴(21), and R₆⁴(25) were enclosed at the salts. Most were not appeared repeatedly, yet the R₂¹(7) and R₂²(7) were established at both the salts of 1 and 3. The major non-covalent linkages were counted via utilizing the Hirshfeld surface analysis (HSA).

Graphical Abstract