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osu1253561259.pdf (1.75 MB)
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Abstract Header
CHEMISTRY OF ICOSAHEDRAL BORANE CLUSTER DENDRITIC PRECURSORS
Author Info
Kerechanin, Seth Ivan
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1253561259
Abstract Details
Year and Degree
2009, Doctor of Philosophy, Ohio State University, Chemistry.
Abstract
Aspects of chemistry of the previously known inner methyl sulfonium salts of [Me2SB12H11]- and 1,7-(Me2S)2B12H10 have been studied. Reactions with nucleophiles like phthalimide and thiolate created methyl thioethers [MeSB12H11]2- and [1-(MeS),7-(Me2S)B12H10]-. Alternately, [MeSB12H11]2- and [1-(MeS),7-(Me2S)B12H10]- can be synthesized by the reduction of the parent sulfonium salts by sodium or potassium in liquid ammonia. A variety of methyl thioethers have been synthesized and characterized through alkylation using a Michael addition-type reaction with alkyl halides. In efforts to create dendrimer-like structures that have the ability to grow outward from a central core, multisubstituted benzene derivative compounds were synthesized using methylthio- icosahedral borane cage compounds as ligands linked by S(CH3)-CH2 units. This divergent dendrimer growth method was used to maximize the boron atom concentration while at the same time utilizing the dendrimer-type structure that could potentially lead to a variety of new and intriguing reactions. All new compounds were characterized using advanced multinuclear NMR techniques and by mass-spectroscopy. The 11B {1H, 13C}, 1H, and 13C NMR spectra of the inner sulfonium salt, methyl thioethers, and thioether-sulfonium salts have been analyzed and certain trends were discovered. These trends allowed certain new reactions to be proposed and carried out. Interesting and new multisubstituted borane cage benzene derivatives were created and the idea of borane cage-based dendrimer structures was expanded.
Committee
Sheldon Shore (Advisor)
Claudia Turro (Committee Member)
Pat Woodward (Committee Member)
Timothy Schroeder (Committee Member)
Pages
155 p.
Subject Headings
Chemistry
Keywords
icosahedral borane dendrimer
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Citations
Kerechanin, S. I. (2009).
CHEMISTRY OF ICOSAHEDRAL BORANE CLUSTER DENDRITIC PRECURSORS
[Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253561259
APA Style (7th edition)
Kerechanin, Seth.
CHEMISTRY OF ICOSAHEDRAL BORANE CLUSTER DENDRITIC PRECURSORS.
2009. Ohio State University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=osu1253561259.
MLA Style (8th edition)
Kerechanin, Seth. "CHEMISTRY OF ICOSAHEDRAL BORANE CLUSTER DENDRITIC PRECURSORS." Doctoral dissertation, Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253561259
Chicago Manual of Style (17th edition)
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Document number:
osu1253561259
Download Count:
1,348
Copyright Info
© 2009, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.