The low-temperature triclinic crystal structure of silver 3-sulfobenzoic acid

Reuben T. Bettinger, Philip J. Squattrito, Darpandeep Aulakh

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Poly[(μ4-3-carboxybenzenesulfonato)silver(I)], Ag(O3SC6H4CO2H) or [Ag(C7H5O5S)] n, has been found to undergo a reversible phase transition from monoclinic to triclinic between 160 and 150 K. The low-temperature triclinic structure (space group P) has been determined at 100 K. In contrast to the reported room temperature monoclinic structure, in which the nearly equivalent carboxylate C-O distances indicate that the acidic hydrogen is randomly distributed between the O atoms, at 100 K the C-O (protonated) and C=O (unprotonated) bonds are clearly resolved, resulting in the reduction in symmetry from C2/c to P.

Original languageEnglish
Pages (from-to)1275-1278
Number of pages4
JournalActa Crystallographica Section E: Crystallographic Communications
StatePublished - Aug 1 2020


  • Crystal structure
  • Hydrogen bonding
  • Low temperature
  • Silver sulfonate salt


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