Co-ordination complexes containing multidentate ligands. Part IX. The synthesis and donor properties of the open-chain tetraselenoether, 1,3-bis(methylselenoethylseleno)propane
Abstract
The quadridentate selenoether, 1,3-bis(methylselenoethylseleno)propane, (bsep), has been synthesised from the newly prepared propane-1,3-diselenol, 2-chloroethyl methyl selenide, and sodium methoxide. The ligand forms only insoluble [Pd2(Se4)X4](X = Cl, Br, or I) complexes on reaction with sodium tetrahalogenopalladates(II) and with nickel(II) iodide forms the polymeric octahedral [Ni2(Se4)I4]. The behaviour of bsep is compared with that of the analogous tetrathioethers. Polymeric [NiL′]n and [PdL′]n are formed by reaction of propane-1,3-diselenol (L′H2) and nickel(II) and palladium(II) salts.