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A magneto - spectroscopic study of the 6A1 - 2T2 crossover in FE(III) complexes

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dc.contributor.author Brown, Ian William Murray
dc.date.accessioned 2011-03-16T23:42:08Z
dc.date.accessioned 2022-10-25T06:24:58Z
dc.date.available 2011-03-16T23:42:08Z
dc.date.available 2022-10-25T06:24:58Z
dc.date.copyright 1971
dc.date.issued 1971
dc.identifier.uri https://ir.wgtn.ac.nz/handle/123456789/23418
dc.description.abstract Two series of compounds: ferric dithiocarbamates and ferric monothio β-diketones, have been prepared during the course of this work, in order to investigate the 6A1 - 2T2 crossover in Fe(III). The current ideas and models are presented here and a series of experiments has been carried out to extend the model to its limits. Solid state and solution magnetic moments have been obtained for some dithiocarbamates, and these results have been compared directly with those obtained by consideration of N.M.R. temperature-dependent spectra. A series of monothio β-diketones from the literature has been fitted to the model and the results suggest that the model can readily accomodate crossover data from compounds other than dithiocarbamates. E.S.R. data is obtained for both series of compounds, and the monothio β-diketone results have been analysed in order to obtain some information about the ground state wavefunctions and the degree of distortion in the 2T2 state. Both E.S.R. and Mössbauer observations of the crossover have been made and reveal that the rate of exchange between high and low spin is comparatively slow for monothio β-diketones, whereas dithiocarbamates exchange at a rate that is much faster than can be detected by modern equipment. en_NZ
dc.format pdf en_NZ
dc.language en_NZ
dc.language.iso en_NZ
dc.publisher Te Herenga Waka—Victoria University of Wellington en_NZ
dc.title A magneto - spectroscopic study of the 6A1 - 2T2 crossover in FE(III) complexes en_NZ
dc.type Text en_NZ
vuwschema.type.vuw Awarded Research Masters Thesis en_NZ
thesis.degree.discipline Chemistry en_NZ
thesis.degree.grantor Te Herenga Waka—Victoria University of Wellington en_NZ
thesis.degree.level Masters en_NZ
thesis.degree.name Master of Science en_NZ

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