Synthesis and luminescence behaviour of mixed-metal rhenium(I)-copper(I) and -silver(I) alkynyl complexes. X-Ray crystal structures of [{eta(2)-Re(Co)(3)(bpy)(C CPh)}(2)Cu]PF6 and [{eta(2)-Re(CO)(3)(bpy)(C CPH)}(2)Ag]PF6

Two mixed-metal rhenium(I)-copper(I) and -silver(I) alkynyl complexes, [{et a(2)-Re(CO)(3)(bpy)(C=CPh)}(2)Cu]PF6 1 and [{eta(2)-Re(CO)(3)(bpy)(C=CPh)}( 2)Ag]PF6 2, have been synthesized and shown to exhibit rich luminescence be haviour; the X-ray crystal structures of both complexes have also been dete rmined.