Pentafluoroethyl Derivatives of Sulfur(IV) Fluorides and the Diazabicyclo[2.2.2]octane-SF4 Lewis-Acid-Base System

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dc.contributor.authorKostiuk, Nathan
dc.contributor.supervisorGerken, Michael
dc.date.accessioned2018-01-23T15:52:33Z
dc.date.available2018-01-23T15:52:33Z
dc.date.issued2017-11
dc.degree.levelMastersen_US
dc.description.abstractPentafluoroethyl derivatives of sulfur(IV) fluorides were synthesized by reacting Me3SiC2F5 with SF4 and SOF2 forming SF3C2F5, SF2(C2F4)2, SOFC2F5, and SO(C2F5)2, all of which were modelled by B3LYP/aug-cc-PVTZ calculations and characterized by high-resolution fluorine-19 NMR spectroscopy including simulations of their complicated 19F NMR spectra. The X-ray crystal structures of SO(C2F5)2, Me3SiC2F5, and [S(OC2H5)3][H3F4] were determined, the latter being formed by the low-temperature alcoholysis of some sulfur(IV) species. The diazabicyclo[2.2.2]octane-SF4 Lewis acid-base system was investigated using Raman spectroscopy, including the formation of C6H12N2•2SF4 that was characterized by X-ray crystallography. When precipitated at low temperature, the DABCO-SF4 system incorporates additional non-adducted SF4 in the solid. Removing some SF4 under dynamic vacuum at –25 °C still left SF4 in the sample, presumably yielding the DABCO•SF4 adduct, based on Raman spectroscopy. The DABCO-SF4 system can be solvolysed by HF that is produced by the hydrolysis of SF4, forming crystals of [C6H12N2H]2F[SF5]•6SF4.en_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/5010
dc.language.isoen_USen_US
dc.proquest.subject0485en_US
dc.proquest.subject0431en_US
dc.proquestyesNoen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of of Chemistry and Biochemistryen_US
dc.publisher.departmentDepartment of Chemistry and Biochemistryen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectLewis acidsen_US
dc.subjectPentafluoroethyl derivativesen_US
dc.subjectSulfur(IV) Fluoridesen_US
dc.titlePentafluoroethyl Derivatives of Sulfur(IV) Fluorides and the Diazabicyclo[2.2.2]octane-SF4 Lewis-Acid-Base Systemen_US
dc.typeThesisen_US
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