Synthesis, Characterization and Optical Study of a New Heterobinuclear Bis(Cyclometalated) Complex Containing Pt(II) and Au(I)

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Naseri, Soroush | 2018

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50514 (03)
University: Sharif University of Technology
Department: Chemistry
Advisor(s): Jamali, Sirous
Abstract:
The bis-cyclometalated platinum(II) complexes [Pt(ptpy)2], 3, and [Pt(fppy)2], 4, in which, ptpy = 2-(p-tolyl)pyridine and fppy = 2-(2,4-difluorophenyl)pyridine have been prepared. The reaction of 3 with one equiv [Au(PPh3)]+ (prepared from the reaction between AuCl(PPh3) and AgOTf) gave the heterobinuclear complex [Pt(ptpy)2Au(PPh3)].OTf, 5, by formation of a Pt→Au dative bond. The structure of all complexes were characterized using multinuclear NMR spectroscopy in solution phase and the structures of 4 and 5 determined using X-ray crystallography in solid state. The structure of heterobinuclear complex 5 shows an unusual Pt-Au bond that supported by Au-Cipso bond. The absorption and emission properties of 5 has been studied and compared with those observed for precursor complex 3. To gain insight into optical properties of 5, DFT and TD-DFT calculations were performed at ground state of obtained structure of the complex from crystallography
Keywords:
Emission ; Metal-Metal Bond ; Bis Cyclometalated Complex ; Gold ; Density Functional Theory (DFT) ; Binucleating Complex ; Platinum ; 2-Paratolyl Pyridine

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