Acyclic tetrachalcogenoether ligands tethered with bulky substituents: Their syntheses and coordination chemistry

New tetrachalcogenoether ligands, [TbtE(o-phenylene)Se]2(o-phenylene) (E = S or Se), and their dichloropalladium(II) complexes were synthesized. Although the X-ray crystallographic analysis for the complexes indicated the existence of interaction between the palladium and the terminal chalcogen atoms in the crystalline state, the 77Se NMR spectrum suggested no interaction between them in solution.