Synthesis, photophysics, electrochemistry, theoretical, and transient absorption studies of luminescent copper(I) and silver(I) diynyl complexes.: X-ray crystal structures of [Cu3(μ-dppm)3(μ3-η1-CCCCPh)2]PF6 and [Cu3(μ-dppm)3(μ3-η1-CCCCH)2]PF6

A series of soluble trinuclear copper(I) and silver(I) complexes containing bicapped diynyl ligands, [M-3(mu-dppm)(3)(mu(3)-eta(1)-CdropCCdropCR)(2)]PF6 (M = Cu, R = Ph, C6H4-CH3-p C6H4-OCH3-p, (C6H13)-C-n, H; M = Ag, R = Ph, C6H4-OCH3-P), has been synthesized and their electronic, photophysical, and electrochemical properties studied. The X-ray crystal structures of [Cu-3(mu-dppm)(3)(mu(3)-eta(1)-CdropCCdropCPh)(2)]PF6 and [Cu-3(mu-dPPM)(3)(mu(3)-eta(1)-CdropCCdropCH)(2)]PF6 have been determined.