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Synthesis of Pincer Palladium Complexes and Molybdenium, Gold and Platinum Complexes Containing Azulene Based Ligands: Catalytic and Optical Properties Studies

Mousavi, Nargesalsadat | 2017

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  1. Type of Document: Ph.D. Dissertation
  2. Language: Farsi
  3. Document No: 49885 (03)
  4. University: Sharif University of Technology
  5. Department: Chemistry
  6. Advisor(s): Bagherzadeh, Mojtaba; Jamali, Sirous
  7. Abstract:
  8. There are two parts in this thesis. The first one is about the synthesis of azulene based compounds, which are characterized by 13C and 1H NMR. These compounds were included in three imine ligands (1,2 and 3) and a NHC ligand (4). Azulene based materials shows a fluorescence emission. The stimuli-responsive emissive azulene derivatives are very rare. herein, we report the synthesis of stimuli responsive emissive 1- and 1,3-disubstitution azulene-based compounds that can switch on and off the emission upon protonation with trifluoroacetic acid (TFAH) and deprotonation with triethylamine respectively. The type of transitions were studied by computational calculations. The complexation of some azulene ligands with Pt (9), Pt-Tl (10), Au (11) and Mo (12) was studied. The Pt complex and Pt-Tl cluster was characterized by X-ray crystallography. In the second part, some of cyclopalladium complexes was synthesized and their catalytic behavior were studied. Three NHCs (5-7) and a imine lagand (8) were synthesized. The 5-7 ligands with palladium salts were used as in-situ catalytic system in Heck cross coupling and S-arylation of methyl phenyl sulfoxide. These compounds were characterized by NMR. In reaction between ligand 8 and palladium dichloride, a two Pd center complex (13) was synthesized and characterized by X-ray crystallography. The complex 13 was used as catalyst in Sonogashira cross coupling
  9. Keywords:
  10. Catalyst ; Sonogashira Coupling ; Azulene Based Materials ; Stimulate Response ; Cyclopalladium ; Coupling ; S-Arylation of Methyl Phenyl Sulfoxide

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