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Title: Transition metal complexes of bis(carbene)pyridine 'pincer' ligands : synthesis and reactivity
Author: Pugh, David Charles
ISNI:       0000 0001 3502 6903
Awarding Body: University of Southampton
Current Institution: University of Southampton
Date of Award: 2008
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A new (CNC) pmcer ligand, (2,6-bis(2,6-diisopropylphenyl)imidazol-2-ylidene)-3,5dimethylpyridine, has been synthesised. the previously reported ligand (2,6bis( 2,6-diisopropylphenyl)imidazol-2-ylidene)pyridine, (CNC) pincer complexes of transition metals across the from titanium to iridium, have been synthesised, fully characterised and investigated. NHCs, trialkylphosphines and imines as canied out. complexes of (CNC) and (PNP) were better a-donors than tpJI,;TP) ligands, in complexes of (CNC), (PNP) and (NNN) better a-donors, contrary to literature reports. keeping ligands A comparison of the cr-dlon:ltlnlg nroDlerties part of pincer ligands ligands revealed to coordinated vinyl groups have been observed (CNC) ligands. Proposed mechanisms indicate the to the CNHC followed by base-catalysed thougflt the latter occurs via a 4-membered nitrogenbinding mode for NnCs also been un:suullrated backbone of an imidazol-2-ylidene ring bonds in an 172 is centre.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available