Tetrakis(2,6-diisopropylphenyl)diphosphine and related compounds : an electrochemical and EPR spectroscopic study of radical cations

Simple item page
dc.contributor.authorTaghavikish, Mona
dc.contributor.supervisorBoeré, René T.
dc.date.accessioned2013-11-18T22:50:58Z
dc.date.available2013-11-18T22:50:58Z
dc.date.issued2012
dc.degree.levelMasters
dc.descriptionxix, 172 leaves : ill (some col.) ; 29 cmen_US
dc.description.abstractIn this thesis the synthesis and full characterization of a new bulky diphosphine, tetrakis-(2,6-diisopropylphenyl)diphosphine, are described. This compound displays facile oxidation and a thorough investigation of its redox properties has been studied by combining solution electrochemical techniques such as cyclic voltammetry (CV) and rotating disk electrode (RDE) voltammetry, with spectroscopic methods such as electron paramagnetic resonance (EPR) and Simultaneous Electrochemical Electron Paramagnetic Resonance (SEEPR) spectroscopy over a wide temperature range. Density functional theory (DFT) calculations were carried out to aid in structural characterization of the radical cation that is produced and to provide computed hyperfine splitting (HFS) constants for comparison with experimental results. For comparison to this species with bulky aromatic substituents, similar studies were conducted that have identified the previously unreported radical cation of tetrakis-tert-butyldiphosphine with a bulky aliphatic substituent that provides even higher steric pressure than the 2,6-diisopropylphenyl group. DFT calculations are reported, as is full characterization with fluid and frozen-solution EPR spectroscopy. Further CV and EPR (SEEPR) studies are reported that led to the identification of radical cations of tris(2,6-diisopropylphenyl)arsine and bis(2,4,6-triisopropylphenyl)(2,6-diisopropylphenyl)phosphine. DFT calculations are reported, as is full characterization with fluid and frozen-solution EPR spectroscopy.en_US
dc.identifier.urihttps://hdl.handle.net/10133/3310
dc.language.isoen_CAen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Chemistry and Biochemistry, c2012en_US
dc.publisher.departmentDepartment of Chemistry and Biochemistryen_US
dc.publisher.facultyArts and Scienceen_US
dc.subjectPhosphorus compoundsen_US
dc.subjectDiphosphonatesen_US
dc.subjectCationsen_US
dc.subjectElectron paramagnetic resonance spectroscopyen_US
dc.subjectX-ray crystallographyen_US
dc.subjectNuclear magnetic resonance spectroscopyen_US
dc.subjectElectrochemistryen_US
dc.subjectDissertations, Academicen_US
dc.titleTetrakis(2,6-diisopropylphenyl)diphosphine and related compounds : an electrochemical and EPR spectroscopic study of radical cationsen_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
TAGHAVIKISH_MONA_MSC_2012.pdf
Size:
3.88 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Arts and Science, Faculty of
University of Lethbridge Theses