Synthesis, structural characterization, and luminescence properties of branched palladium(II) and platinum(II) acetylide complexes

Three luminescent palladium(II) and platinum(II) acetylide complexes, 1,3-[Cl(PEt3)(2)PdC=CC6H4C=C](2)-5-[(Pr-i)(3)SiC=C]C6H3 and 1,3,5-[Cl(PEt3)(2)MC=CC6H4C=C](3)C6H3 (M = Pd or Pt), have been synthesized by the reaction of the corresponding starting complexes, trans-M(PEt3)(2)Cl-2 (M = Pd or Pt), with branched alkynyl ligands. Their crystal structures, together with their luminescence behavior, have been reported.