Physico-chemical study of new supramolecular-architectured hybrid organic–inorganic sulfates incorporating diammoniumdiphenylsulfone cations

Abstract

Two new hybrid organic–inorganic compounds, which incorporate 3,3′-diammoniumdiphenylsulfone or 4,4′-diammoniumdiphenylsulfone cations and sulfate anions, were synthesized and analyzed in detail.

Molecular-Level Investigation of Hydrate–Anhydrous Phase Transformations of the Dapsone Structurally Related Compound 3,3′-Diaminophenyl Sulfone

“…The overall shape adopted by the 3APS molecule in the hemihydrate species well compares with that observed in the anhydrous crystal forms: in all cases, the two −NH 2 groups are trans disposed with respect to the molecular backbone (Figure 1 right). Interestingly, this conformation is the only one observed in structures, deposited in the CSD, containing neutral 3APS molecules, 15,16,18,20 while in structures containing protonated 3APS molecules, [13][14][15]19,21 only the cis disposition has been found. The angle (α) formed by the mean planes defined by the nonhydrogen atoms of the aromatic moieties in all four investigated 3APS solid forms is comparable to (see Table S2) and in agreement with the structural data deposited in the CSD for the fragment SO 2 (C 6 H 2 R 1 R 2 R 3 ) 2 (only organic, 3D coordinates determined; no ortho substituents, acyclic sulfur).…”

“…The overall shape adopted by the 3APS molecule in the hemihydrate species well compares with that observed in the anhydrous crystal forms: in all cases, the two −NH 2 groups are trans disposed with respect to the molecular backbone (Figure right). Interestingly, this conformation is the only one observed in structures, deposited in the CSD, containing neutral 3APS molecules, ,,, while in structures containing protonated 3APS molecules, − ,, only the cis disposition has been found.…”

“…18 3APS crystallizes in the space group P2 1 /c, with one independent molecule in the asymmetric unit (3APS_Am, hereafter). A search in the Cambridge Structural Database (CSD) also shows other forms containing neutral or protonated 3APS molecules: two anhydrous salt-cocrystals (RAFDUZ 14 and VEWFEK 15 ), a true salt (IYIVIY), 19 a true solvate (RIZDEK), 20 and two hybrid organic−inorganic compounds (SUWVOY 21 and TEGGUK 13 ).…”