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|4 Summary| particle size / nm 5000 4000 3000 2000 Ru(bbip)Ag Ru(bbip) + [Pd(ACN) 2Cl 2 ] Ru(bbip)Pd 1000 0 0.0 0.5 1.0 1.5 2.0 irradiation time / h 10. In a explorative investigation on the development of electron deficient compounds such as Ru(bbip) 3 or Ru(Br 2 bbip), the new ligands Br 2 ip, Br 2 bip, and Br 2 bbip were prepared. However, application of standard procedures for the complexation resulted in both cases in an unexpected reactivity of the ligand structure and, interestingly, yielded the compounds Ru(bip) 3 and Ru(Br 2 bip) 3 , as first indicated by NMR-analysis. The X-ray analysis of the latter exhibited similar properties to the related Ru(bip). From these results, an impression of the limitations of the ligand stability and the scope of the synthesis of electron deficient complexes was received. 11. Starting from ip, the new ligands eip and edip were prepared, using methods developed for the bbip synthesis, and fully characterized. With this development a bridging ligand with |181|
|4 Summary| additional NN- and NHC-coordination sphere was obtained, opening up the access toward multimetallic catalyst centers and extended light harvesting systems. The x-structural analysis of edip exhibits a pre-organized NHC-NHC chelating sphere which is suitable for multimetallic metal fragments with a diameter of roughly 0.6 nm. From the ligands, the N,N’-coordinated {Ru(tbbpy) 2 } 2+ -type complexes Ru(eip), and Ru 2 (edip) could be prepared and characterized, including X-ray analysis of Ru(eip). In a final exploratory study the tetranuclear compound Ru 2 (edip)Ag 2 , containing the silver NHC moiety was prepared and characterized by different NMR and MS analysis. In general, the prepared phenanthroline and imidazophenanthroline ligands such as phenphen, bbip or edip were found to be suitable starting materials for the further incorporation into intramolecular photocatalytic systems. Especially the combination of azadiene and NHC coordination spheres was found to be ideal for the design of stable molecular P ∼ B ∼ C-type devices in which the catalytic center as well as the photocenter may be widely varied in terms of metal fragment and co-ligand environment to even allow a change in the nature of the catalytic reaction, which is driven by light. There is to hope that these achieved results will pave the way for further research and development and thus that possibly a contribution was made to the answer the energy problem of the future. |182|
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Development of Novel Catalysts for
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Diese Arbeit entstand auf Anregung
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Den Arbeisgruppen von Prof. Dr. U.
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Contents 1 Introduction 1 1.1 Fossi
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|Contents| 6 Experimental Section 1
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|1 Introduction| 1 Introduction The
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|1.1 Fossil Fuels and Nuclear Power
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|1.2 Renewable Fuels| of natural ga
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|1.3 Energy Transformation and Stor
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|1.4 Solar Energy Conversion| A fra
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|1.5 Photosynthesis| Figure 9: Mole
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|1.6 Photocatalyzed Reactions| 2 NA
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|1.6 Photocatalyzed Reactions| (1)
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|1.7 Mimicking Photosynthesis| So t
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|1.8 Formalisms of Photocatalytic S
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|1.9 Multicomponent Systems from Fu
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|1.10 Intramolecular Photoredoxcata
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|2 Scope of the Thesis| motifs with
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|3.1 Brominated Phenanthrolines - A
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|3.2 Bisphenanthroline: A Suitable
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f f f f f f |3.2 Bisphenanthroline:
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|3.3 NN-NHC-Ligand bbip: Toward Sec
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Page 142 and 143: |3.3 NN-NHC-Ligand bbip: Toward Sec
Page 170 and 171: |3.4 Outlook, Exploratory Investiga
Page 185 and 186: |4 Summary| 4 Summary Against the b
Page 187 and 188: |4 Summary| The resulting complexes
Page 189 and 190: |4 Summary| 10 [TEA] + TEA visible
Page 191: |4 Summary| absorption between 430
Page 195 and 196: |5 Zusammenfassung| Die Herstellung
Page 197 and 198: |5 Zusammenfassung| phenphen und Ru
Page 199 and 200: |5 Zusammenfassung| Fragment tragen
Page 201 and 202: |5 Zusammenfassung| [TEA] + TEA vis
Page 203 and 204: |5 Zusammenfassung| In einer abschl
Page 205 and 206: |6 Experimental Section| Spectroele
Page 207 and 208: |6 Experimental Section| 1.3648 was
Page 209 and 210: |6.1 Synthesis of the Organic Ligan
Page 223 and 224: |6.2 Synthesis of the Metal Complex
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|6.2 Synthesis of the Metal Complex
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|7 Appendix| 7 Appendix dd ddd DEI
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|7 Appendix| Ru(tpphz)Os [Ru(bpy) 2
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|References| [26] M. Chanon, M. Sch
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|References| [81] S. Tschierlei, M.
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|References| [138] L. Pazderski, J.
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|References| [194] C. Liu, J. Li, B
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Selbstständigkeitserklärung: Ich
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