Novel palladium complexes of Se,N,Se tridentate ligands derived from cycloalkeno-1,2,3-selenadiazoles

Abstract

The reaction between [Pd₂(dba)₃] (dba = dibenzylideneacetone), a trialkylphosphine, and a cycloalkeno-1,2,3-selenadiazole in toluene under reflux leads in good yield to the complexes [PdL(PR₃)] [L = SeC(R¹)C(R²)N NC(R¹)C(R²)Se; R¹–R² = (CH₂)_n; R = Et, Buⁿ] containing a novel Se,N,Se tridentate ligand formed by the coupling of two 1,2,3-selenadiazole molecules; the structure of the product with R = Buⁿ and n = 4 has been determined by X-ray crystallography.