Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/39408
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dc.contributor.authorLin, Yu Han.-
dc.date.accessioned2010-05-24T01:27:50Z-
dc.date.available2010-05-24T01:27:50Z-
dc.date.copyright2010en_US
dc.date.issued2010-
dc.identifier.urihttp://hdl.handle.net/10356/39408-
dc.description.abstractIn this project we wish to report our findings on the synthesis of a P-S-P linked bidentate ligand, compound 1 from the precursor, bis[(3,4-dimethylphosphole) pentacarbonyltungsten]sulfide, 2. While in the preparation of compound 2, it was discovered that undergoes a [2+2] cycloaddition to form 3, followed by a rearrangement to form compound 4. Overall, compound 2 undergoes a stepwise [4+4] cycloaddition to form compound 4. Synthesis of compound 4 was found to work best with visible light irradiation using dichloromethane as the solvent. Converting compound 2 to 1 by reaction with DMAD to form the bis-7-phosphanobornadiene complex was unsuccessful. Creating asymmetrical P-S-P linked phosphinidene sources was attempted by making use of previous discovery that [1-chlorophosphirane] pentacarbonyltungsten generates the terminal phosphinidene upon heating. Compound 5 was synthesized in the process which dimerized to compound 2. The last of the attempts failed as the protected thiophosphole (compound 6) did not form the 7-phosphanobornadiene due to steric bulk, preventing the Diels-Alder Cycloaddition. Finally, attempts were made to desulfurize or decomplex compound 4 in hope of formation of a new polycyclic bidentate ligand in use for catalysis.en_US
dc.format.extent47 p.en_US
dc.language.isoenen_US
dc.subjectDRNTU::Science::Chemistry::Organic chemistry::Organometallic compoundsen_US
dc.titleFormation of novel polycyclic P-S-P linked complex through an unexpected stepwise [4+4] cycloaddition.en_US
dc.typeFinal Year Project (FYP)en_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.degreeBachelor of Science in Chemistry and Biological Chemistryen_US
dc.contributor.supervisor2François Matheyen_US
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Appears in Collections:SPMS Student Reports (FYP/IA/PA/PI)
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