[{"key":"dc.contributor.author","value":"Ng, Flora Tak Tak","language":null},{"key":"dc.date.accessioned","value":"2011-07-06T20:41:51Z","language":null},{"key":"dc.date.available","value":"2011-07-06T20:41:51Z","language":null},{"key":"dc.date.issued","value":"1968","language":null},{"key":"dc.identifier.uri","value":"http:\/\/hdl.handle.net\/2429\/35913","language":null},{"key":"dc.description.abstract","value":"A kinetic study was undertaken to investigate the potentiality of rhodium chioro complexes containing diethyl sulphide ligands as homogeneous catalysts. Preliminary studies have also been carried out on the analogous iridium complexes and some rhodium complexes containing arsenic ligands.\r\nUnder mild conditions of temperature and pressure (70-85\u00b0C and upto one atmosphere of hydrogen), it was found that cis RhCl\u2083(Et\u2082S)\u2083 in dimethylacetamide solution is an active catalyst for the homogeneous hydrogenation of maleic acid, trans cinnamic acid and ethylene. In benzene solution, no homogeneous hydrogenation occurred. The kinetics of the maleic acid hydrogenation have been studied in detail and it was found that the hydrogenation process consisted of two rate determining steps: the initial hydrogen reduction of Rh(III) to Rh(I) which complexed rapidly with the maleic acid present and the subsequent hydrogenation of the Rh(I) - maleic acid complex to yield succinic acid and Rh(I) again. The detailed mechanisms of these steps, with particular emphasis on solvent effects are discussed.\r\nThe corresponding IrCl\u2083(Et\u2082S)\u2083 complex and Rh(III) complexes with \"difars\" and \"diars\" (two chelating arsenic ligands) were inactive as homogeneous hydrogenation catalysts, however reactions with H\u2082 were observed with the iridium complex itself and also the rhodium difars complex; these reactions are also discussed.","language":"en"},{"key":"dc.language.iso","value":"eng","language":"en"},{"key":"dc.publisher","value":"University of British Columbia","language":"en"},{"key":"dc.rights","value":"For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https:\/\/open.library.ubc.ca\/terms_of_use.","language":null},{"key":"dc.title","value":"Activation of hydrogen by rhodium nad iridium chloro complexes containing sulphide or arsine type ligands.","language":"en"},{"key":"dc.type","value":"Text","language":"en"},{"key":"dc.degree.name","value":"Master of Science - MSc","language":"en"},{"key":"dc.degree.discipline","value":"Chemistry","language":"en"},{"key":"dc.degree.grantor","value":"University of British Columbia","language":"en"},{"key":"dc.type.text","value":"Thesis\/Dissertation","language":"en"},{"key":"dc.description.affiliation","value":"Science, Faculty of","language":"en"},{"key":"dc.description.affiliation","value":"Chemistry, Department of","language":null},{"key":"dc.degree.campus","value":"UBCV","language":"en"},{"key":"dc.description.scholarlevel","value":"Graduate","language":"en"}]