Synthesis, characterization and luminescence studies of trinuclear rhenium-cobalt mixed-metal alkynyl complexes containing a tetrahedral Co2C2 cluster unit

摘要

The reaction of rhenium(I) diynyl complexes [Re(CO)(3)(N-N)(Cequivalent toC-Cequivalent toCH)] [N-N=(t)Bu(2)bpy (1), bpy (2)] with Co-2(CO)(8) in THF yielded a new class of luminescent trinuclear rhenium-cobalt mixed-metal alkynyl complexes, [Co-2{mu-HC(2)Cequivalent toC[Re(CO)(3)(N-N)]}(CO)(6)] [N-N=(t)Bu(2)bpy (3), bpy (4)]. Their luminescence and electrochemical properties have also been studied.