This Thesis describes the synthesis and characterisation of new alkaline earth- and rare earth-transition metal complexes. Experimental and computational studies were performed to investigate the structure and bonding in these complexes. Their reactivity was also studied.
Chapter 1 introduces metal-metal bonded complexes and current alkaline earth- and rare earth-transition metal bonded complexes.
Chapter 2 describes experimental ... [truncated at 450 characters in length]
|Creator||Matthew Paul Blake;|
|Subject||Chemistry & allied sciences Chemical crystallography Computational chemistry Co-ordination chemistry Crystallography Inorganic chemistry Mass spectrometry NMR spectroscopy Organometallic Chemistry Spectroscopy and molecular structure|
This Thesis describes the synthesis and characterisation of sulfonamide supported titanium, zirconium and aluminium complexes and their use as ring opening polymerisation catalysts for ε-caprolactone and rac-lactide.
Chapter 1 introduces polyester use, development and characterisation in general. Metal catalysed ring opening polymerisation of cyclic esters is considered in a literature review of the field. Titanium, zirconium and alumin ... [truncated at 450 characters in length]
|Creator||Andrew Douglas Schwarz;|
|Subject||Chemistry & allied sciences Catalysis Chemical crystallography Chemical kinetics Co-ordination chemistry Crystallography Inorganic chemistry NMR spectroscopy Organic chemistry Organic synthesis Organometallic Chemistry Structural chemistry polymer polymerisation polymer chemistry|
This thesis describes the synthesis and characterisation of metal complexes that contain chemically reduced bipyridyl ligands. The crystal structures of twenty-six novel complexes are reported alongside detailed discussions on the electronic and spectroscopic effects and trends associated with the different oxidation states within these species.
Chapter One introduces the isomers of bipyridine and their redox chemistry, ... [truncated at 450 characters in length]
|Creator||Mark Robert Floyd Irwin;|
|Subject||Co-ordination chemistry Crystallography Chemical crystallography Inorganic chemistry Spectroscopy and molecular structure Structural chemistry|
|Abstract||Overlapping absorption edges will occur when an element is present in multiple oxidation states within a material. DetOx is a program for partitioning overlapping X-ray absorption spectra into contributions from individual atomic species and computing the dependence of the anomalous scattering factors on X-ray energy. It is demonstrated how these results can be used in combination with X-ray diffraction data to determine the oxidation state of io ... [truncated at 450 characters in length]|
|Author||Karim J. Sutton; Sarah A. Barnett; Kirsten E. Christensen; et al|
|Abstract||The determination of small-molecule structures from single-crystal X-ray data is being carried out by researchers with little or no crys- tallographic training. At the same time, completely automatic crystal structure analysis can still only be achieved under very favourable conditions. Many of the problems that cause automatic systems to fail could be resolved with suitable chemical insight, and until this is built- in, programs continue to need ... [truncated at 450 characters in length]|
|Author||Paul W. Betteridge; J. Robert Carruthers; Keith Prout; et al|
|Subject||Chemical crystallography Crystallography|