Versatile precursors for multinuclear platinum(II) alkynyl assembly - synthesis, structural characterization and electrochemical studies of luminescent platinum(II) alkynyl complexes

Newly synthesized diethynylcarbazole-bridged platinum(II) complex 3,6-{ClPt(PEt3)(2)Cequivalent toC}(2)-9-(n)BuCarb ((n)BuCarb=n- butylcarbazole) and terpyridyl-containing platinum(II) alkynyl complex [Pt((t)Bu(3)trpy) (Cequivalent toCC(6)H(4)Cequivalent toCH)]OTf were shown to serve as versatile precursors for the assembly of a novel luminescent tetranuclear platinum(II) alkynyl complex [3,6- {Pt((t)Bu(3)trpy) (Cequivalent toCC(6)H(4)Cequivalent toC)Pt(PEt3)(2)Cequivalent toC}(2)-9-(n)BuCarb] (OTf)(2). A divergent route can also be applied to synthesize the tetranuclear complex in three steps, involving the use of trimethylsilyl protecting groups on the alkynyl ligand.