Nickel and iridium pincer complexes with saturated frameworks - synthesis and reactivity
Author
Summary, in English
As the tridentate chelate complexes referred to as pincer complexes have expanded their scope as homogeneous catalysts, there is an increased interest in electronic and steric fine-tuning of such complexes. One accessible variable in this aspect is the hybridisation of any coordinated carbon atoms. This thesis describes the synthesis of bis(phosphine) and bis(phosphinite) PCP pincer complexes with nickel and iridium. The studied pincer ligands have all-aliphatic backbones based on a linear alkyl or a cyclohexyl moiety. The presented families of new pincer complexes have been investigated with aspect to their coordination chemistry and stability. The reactivity of POCOP-supported nickel complexes towards carbon dioxide and carbon monoxide has been studied. Further, iridium pincer complexes with saturated frameworks have been evaluated as catalysts for alkane dehydrogenation reactions. The work also include indications of an unusual C(sp3)–C(sp3) reductive elimination at an iridium(III) centre, resulting in a net methyl migration from the metal to the ligand backbone.
Department/s
Publishing year
2014
Language
English
Full text
- Available as PDF - 13 MB
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Document type
Dissertation
Publisher
Department of Chemistry, Lund University
Topic
- Chemical Sciences
Keywords
- PCP complexes
- aliphatic pincer ligands
- coordination
- cyclometallation
- iridium
- nickel
- organometallic synthesis
- CO2 activation
- catalysis
Status
Published
Supervisor
ISBN/ISSN/Other
- ISBN: 978-91-7422-357-6
Defence date
9 June 2014
Defence time
09:15
Defence place
Kemicentrum, Sal F
Opponent
- Timo Repo