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akron1226945430.pdf (2.22 MB)
ETD Abstract Container
Abstract Header
Interactions of Group 13 Lewis Acids with Hexachlorocyclotriphosphazene
Author Info
Tun, Zin-MIn
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=akron1226945430
Abstract Details
Year and Degree
2008, Master of Science, University of Akron, Chemistry.
Abstract
Ring opening polymerization (ROP) of hexachlorocyclotriphosphazene ([PCl
2
N]
3
) produces the phosphazene polymer that can later be functionalized for a variety of applications. However, the ROP process is irreproducible, and its mechanism is not well-understood. It had been proposed that Lewis acid catalysts might abstract a chloride from [PCl
2
N]
3
and promote the bond breakage in the initial step of the ROP. In this research, the interactions of Group 13 Lewis acids with [PCl
2
N]
3
were investigated. Adducts of [PCl
2
N]
3
with AlCl
3
, AlBr
3
, and GaCl
3
were successfully synthesized and characterized by X-ray crystallography and
31
P and
1
H VT NMR. Contrary to the previous reports, the Lewis acids did not remove the chloride from [PCl
2
N]
3
. Instead, they formed dative bonds with the nitrogen atom on [PCl
2
N]
3
. The adduct formation weakened the two P-N bonds on [PCl
2
N]
3
that involved the nitrogen atom participating in the dative bond and its phosphorous neighbors on the ring.
Committee
Claire Tessier, Dr. (Advisor)
Wiley Youngs (Advisor)
Keywords
PCl2N
;
Cl
;
3.GaCl3
;
3.AlCl3
;
3.AlBr3
;
NMR
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RIS
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Citations
Tun, Z.-M. (2008).
Interactions of Group 13 Lewis Acids with Hexachlorocyclotriphosphazene
[Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1226945430
APA Style (7th edition)
Tun, Zin-MIn.
Interactions of Group 13 Lewis Acids with Hexachlorocyclotriphosphazene.
2008. University of Akron, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=akron1226945430.
MLA Style (8th edition)
Tun, Zin-MIn. "Interactions of Group 13 Lewis Acids with Hexachlorocyclotriphosphazene." Master's thesis, University of Akron, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1226945430
Chicago Manual of Style (17th edition)
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Document number:
akron1226945430
Download Count:
1,223
Copyright Info
© 2008, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.