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Title: Mixed donor carbene pyridyl ligands and their metal complexes
Author: Ahmed, Aminu
ISNI:       0000 0004 2751 8766
Awarding Body: Cardiff University
Current Institution: Cardiff University
Date of Award: 2008
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This thesis describes the synthesis of a series of Ag(I), Pd(II), Rh(I) and Ir(I) complexes of quinoline functionalised nucleophilic heterocyclic carbene (NHC) ligands. The transmetallation properties of the Ag(I) complexes were utilised to prepare the corresponding Pd(II), Rh (I) and Ir(I) (NHC) complexes. A series of quinoline based imidazolium, pyrimidinium salts were prepared and characterised as NHC ligand precursors. Ag(I)(NHC) complexes were prepared by the reaction of the quinoline functionalised salts with Ag20 in DCM. All complexes were spectroscopically characterised and the results of single X- ray crystallographic studies are reported for two of the complexes and the geometry around the silver cation was observed to be distorted linear. Two quinoline based palladium (II) (NHC) complexes were prepared via transmetallation Ag(I)(NHC) complexes is reported. The synthesis of a series of methylene bridged quinoline functionalised Rh (I) and Ir(I) (NHC) complexes through transmetallation of the Ag(I)(NHC) complexes is reported and the results of single X-ray crystallographic studies are reported for most of the complexes showing consistent pattern in term of bond lengths and angles. Two of the Ir(I) (NHC) complexes were tested as catalysts in transfer hydrogenation reactions, showing good activity at low Ir loadings.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available