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Synthesis, Characterization, and Reactivity of Novel Zinc Coordination Complexes

Ritch, Grayson D
http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1399675758

Abstract Details

2014, BS, Kent State University, College of Arts and Sciences / Department of Chemistry and Biochemistry.
This thesis overall entails the synthesis and characterization of several novel zinc coordination complexes in attempt to develop alternative Zn catalysts for the ROP of LA. Chapter II described the synthesis and characterization of several zinc thiolate complexes supported by the 1,1,3,3- tetramethylguanidine (H-TMG) ligand. These compounds were synthesized in a very straightforward reaction with diethylzinc, the corresponding thiol, and H-TMG. Reaction of compound 2 yielded an isopropoxide bridged complex that is a proposed intermediate for the ROP of PLA. Chapter III described the preliminary synthetic routes toward the synthesis of polydentate base tethered ligands. Reaction of a dilithiated 2-bromo-4,6-di-tert-butylphenol with dimethylcyanamide was shown to undergo elimination to yield compound 4. This elimination product had not been observed in previous methods for the synthesis of 1,1,3,3-tetraalkylguanidines (HTAG). Finally, Chapter IV described the reactivity of these zinc thiolate compounds and base tethered polydentate complexes in the ROP of LA as well as a method for determining the tacticity of the PLA polymers. Results showed no change in neither reactivity of the zinc thiolate compounds nor stereochemical control of the reaction relative to the zinc aryloxide compounds. The polymerization using the Zn complex with the base tethered ligand requires additional work to completely evaluate its utility.
Scott Bunge, Dr (Advisor)
Paul Sampson, Dr (Committee Member)
Nicola Brasch, Dr (Committee Member)
Artem Zvavitch, Dr (Committee Member)
61 p.
Chemistry; Inorganic Chemistry; Polymer Chemistry
catalysis, ring opening polymerization, zinc, coordination complexes, single crystal X-ray crystallography, polylactic acid

Recommended Citations

Citations

  • Ritch, G. D. (2014). Synthesis, Characterization, and Reactivity of Novel Zinc Coordination Complexes [Undergraduate thesis, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1399675758

    APA Style (7th edition)

  • Ritch, Grayson. Synthesis, Characterization, and Reactivity of Novel Zinc Coordination Complexes. 2014. Kent State University, Undergraduate thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1399675758.

    MLA Style (8th edition)

  • Ritch, Grayson. "Synthesis, Characterization, and Reactivity of Novel Zinc Coordination Complexes." Undergraduate thesis, Kent State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors1399675758

    Chicago Manual of Style (17th edition)

ksuhonors1399675758
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© 2014, all rights reserved.
This open access ETD is published by Kent State University Honors College and OhioLINK.