Synthesis and characterization of 3-dimethylaminopropyl selenolate complexes of palladium(II) and platinum(II)

Article abstract of DOI:10.1016/S0020-1693(03)00080-X

Bis(3-dimethylaminopropyl)diselenide was prepared by the reaction of Na₂Se₂ with Me₂NCH₂CH₂CH₂Cl. 3-Dimethylaminopropylselenolate complexes of palladium and platinum of the formulae [M(SeCH₂CH₂CH₂NMe₂)Cl] ₂, [M(SeCH₂CH₂CH₂NMe₂)₂] (M=Pd or Pt), [Pd(OAc)(SeCH₂CH₂CH₂NMe₂)], [PtCl(SeCH₂CH₂CH₂NMe₂)(PR ₃)]₂ (PR₃=PMePh₂ or PPr₃), [Pt(SeCH₂CH₂CH₂NMe₂) ₂(P-P)] (P-P=dppm, dppe or 2PPh₃) have been synthesized by using either the diselenide or its reduction product from the reaction with NaBH₄. All complexes have been characterized by elemental analysis, IR and NMR (¹H, ¹³C, ³¹P, ⁷⁷Se, ¹⁹⁵Pt) spectroscopy. The stereochemistry of these complexes has been deduced from the NMR spectroscopic data. The structure of [Pd(SeCH₂CH₂CH₂NMe₂)Cl] ₂ was established by single crystal X-ray diffraction analysis. Each palladium atom in the dimer is surrounded by two μ-Se atoms, a nitrogen atom and a chloride ligand.