Structure and electrical properties of a one-dimensional polymeric silver thiosaccharinate complex with argentophilic interactions:

DENNEHY, MARIANA; AMO-OCHOA, PILAR; FREIRE, ELEONORA; SUÁREZ, SEBASTIÁN; HALAC, EMILIA; BAGGIO, RICARDO

Acta Crystallographica Section C: Structural Chemistry

Wiley-Blackwell

Año: 2018 vol. 74 p. 186 - 193

Among the potential applications of coordination polymers, electrical conductivity ranks high in technological interest. We report the synthesis, crystal structure and spectroscopic analysis of an AgI-thiosaccharinate one-dimensional coordination polymer {systematic name: Catena-poly[[[aquatetrakis(μ3-1,1-dioxo-1,2-benzisothiazole-3-thiolato-κ3N:S3:S3)tetrasilver(I)]-μ2-4,4′-(propane-1,3-diyl)dipyridine-κ2N:N′] dimethyl sulfoxide hemisolvate]}, {[Ag4(C7H4NO2S2)4(C13H14N2)(H2O)]·0.5C2H6OS}n, with the 4,4′-(propane-1,3-diyl)dipyridine ligand acting as a spacer. A relevant feature of the structure is the presence of an unusually short Ag.Ag distance of 2.8306´(9)´Å, well within the range of argentophilic interactions, confirmed experimentally as such by a Raman study on the low-frequency spectrum, and corroborated theoretically by an Atoms in Molecules (AIM) analysis of the calculated electron density. Electrical conductivity measurements show that this complex can act as a semiconductor with moderate conductivity.A one-dimensional polymeric silver thiosaccharinate complex displays an unusually short Ag.Ag distance of 2.830Å. The crystal structure consists of weakly interacting columns. The complex behaves as a semiconductor, with a moderately low conductivity.