| Summary: | 碩士 === 東吳大學 === 化學系 === 98 === Diphenyl(2-pyrrolyl)phosphine, Pyrr2P, which is a bidentate ligand, reacted with the group 11 metal ions to from dimeric compounds of the types [Au2(Pyrr2P)2] (3), [AuAg(Pyrr2P)2] (4) and [AuCu(Pyrr2P)2] (5). Their aurophilicity and metallophilicity with regard to the distances between two metal ions and the influence of luminescent properties were investigative. For compound 3, the Au-Au distance is 2.8865(5)~2.8745(5) ?? while in compounds 4 and 5, the Au-M distances are 2.8353(7) ? (M = Ag) and 2.7890(13) ? (M = Cu) respectively. Structures of 3 and 4 show head-to-tail coordination mode and structure 5 is head-to-head. The NMR spectra have been investigated for all three compounds. The Ag-P chemical shift and coupling constants in compound 4 are δ 0.23 (J1107Ag-31P = 567.0Hz, J1109Ag-31P = 656.1Hz). Their luminescent properties are also dependent on the metal-metal interaction or inter-molecular interaction. Compound 5 absorbs the visible light (424 nm) and emits the light-green color (546 nm). In this thesis, we also used the DFT calculation to describe each energy gap for 3, 4 and 5.
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