An isoxazole-based polymeric co-ordination network incorporating a helical Ag(I)-S structural motif

摘要

An isoxazole-based ligand 2 bearing a thioether side arm in the 5-position of the heterocycle forms a polymeric coordination network with Ag(ClO_4) (space group Aba2), in which the ligand is coordinated to three different silver ions via the ring N and the bridging thioether-S. The resulting layer structure consists of infinite Ag(I)-S helices linked by the isoxazole moieties, with the latter being stacked above each other. A related complex 2 centre dot AuCl (space group C2/c) features linear S-Au-Cl units associated by weak d~(10)-d~(10) interactions, while the isoxazole nucleus remains uncoordinated. The solid state structures are compared to those of related isothiazole complexes.