Ditopic azathioether macrocycles as hosts for transition metal salts†
Abstract
The synthesis and complexation of two heteroditopic lariat azathioether macrocycles L1 and L2 incorporating acylurea functionalised pendant arms are described; L1 and L2 are capable of simultaneously binding both the cationic and anionic moieties of a metal salt as confirmed by the structures of [PdCl2(L1)], [CuCl(L2)]2CuCl4 and [Ag(NO3)(L2)] and by 1H NMR studies in solution on [Ag(NO3)(L2)].