Part I. Synthesis, characterization, and reactivity of novel rhenium (V) phosphine complexes. Part II. Efficacy of computer-assisted labs
Kimberly Jo Smith, Purdue University, United States
Purdue University . Awarded
Part I describes the synthesis of the fac-cis and mer-trans isomers of ReOCl3(PEt3) 2 in high yield with the fac-cis isomer being structurally characterized by X-ray crystallography for the first time. The heptahydrides ReH7(PR3)2 and pentahydrides ReH5(PR 3)3 have been synthesized where R = Me, Et. The previously unreported compounds ReO(OR)Cl2(PMe3)2 and ReO(OR)Cl2(PEt3)2, where R = Me, Et, have been synthesized through phosphine displacement on the complex ReO(OR)Cl 2(PPh3)2, with the methyl derivative being characterized by X-ray crystallography. Part II describes two new electrochemistry experiments which utilize computers to collect and organize data. The first involves solution conductivity and incorporates a titration of an acid mixture with a strong base. The second involves a titration using a student-built ion sensitive electrode. Student conceptual knowledge was assessed both before and after the experiments were implemented by semi-structured interviews. A quasi-control group was also interviewed. Electrochemical misconceptions are identified, analyzed and discussed. Teaching strategies and recommendations are given.
Smith, K.J. Part I. Synthesis, characterization, and reactivity of novel rhenium (V) phosphine complexes. Part II. Efficacy of computer-assisted labs. Ph.D. thesis, Purdue University.
Citation reproduced with permission of ProQuest LLC.
For copies of dissertations and theses: (800) 521-0600/(734) 761-4700 or https://dissexpress.umi.com