The low-temperature triclinic crystal structure of silver 3-sulfo-benzoic acid.

ABSTRACT: Poly[(?4-3-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 carboxyl-ate 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 .

SUBMITTER: Bettinger RT 

PROVIDER: S-EPMC7405583 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature