Synthesis, structures, and electronic spectroscopy of luminescent acetylene- and (buta-1,3-diyne)platinum complexes

摘要: The electronic absorption and emission spectroscopy of a series diphenylaceylene- (buta-1,3-diyne)-Pt0 complexes (L)Pt[(1,2-η2)-R–(C≡C)n–R] [(dppp)Pt]2[μ-(1,2-η2):(3,4-η2)-R–(C≡C)2–R] {R = Ph or CH3, L dppp or(PPh3)2, n 1 2} was investigated. structures of(dppp)Pt[(1,2-η2)-Ph–C≡C–Ph], (dppp)Pt[(1,2-η2)-PhC4Ph] [(dppp)Pt]2[μ-(1,2-η2):(3,4-η2)-Ph–(C≡C)2–Ph] were characterized by X-ray diffraction. all display intense absorptions that attributed to PtP(dπ*) Ptacetylene(πx*) transitions. Except for the CH3C4CH3 complexes, exhibit two emissions at 380–550 nm 500–800 nm. higher energy could arise from 3[P(dπ*)Pt] transition, lower emission, which has longer lifetime than one, 3[acetylene(πx*)Pt] transition. MLCT affected properties acetylenes ancillary phosphanes. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)