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| CLAIRE A. TESSIER |
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Professor
B.S., 1975, University of Vermont
Ph.D., 1982, State University of New York at Buffalo
Postdoctoral fellow, 1981-1982, University of Rhode Island
Faculty and research associate, 1983-1990, Case Western Reserve University |
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Office: KNCL 204
(330) 972-5304 |
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Lab: KNCL 202
(330) 972-7065 |
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| Email: tessier@uakron.edu |
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| Website: |
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| Research Interest |
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My research projects involve the synthesis and characterization of new compounds with application to materials with novel properties and the development of synthetic methodologies and catalytic processes. The chemistry of both the main group elements and the transition metals is investigated. The use and development of anaerobic techniques are often part of my group's projects. Modern techniques, such a multinuclear NMR (especially 29Si, 31P, 27Al and 195Pt), 2D and 3D NMR experiments, and X-ray crystallography, are used to characterize new compounds. Projects are often collaborative in nature. This provides our students with broader training and experience.
We are engaged in fundamental studies that involve the stabilization of unusual coordination numbers or bonding modes of silicon. We have used dimeric transition-metal moieties to stabilize silylene (SiR2) ligands and silyl ligands with agostic Si-H units. Hypervalent compounds such as five-coordinate SiR3(Base)2+ and the six-coordinate SiCl4(PR3)2 have also been prepared. Studies of the reaction chemistry of these species are in progress. Relationships between NMR chemical shifts, structural parameters and reactivity are being determined.
everal projects involve the synthesis and characterization of inorganic backbone polymers and dendrimers. Such polymers have properties that differ or complement those of the conventional organic polymers. Recently, we reported the synthesis of a linear carbosilane polymer and a carbosilane dendrimer and the application of 3D 1H/13C/29Si NMR characterization to these systems. Siliconium ions have been generated at the periphery of the dendritic carbosilanes and along the chains of carbosilane polymers to generate novel ionomers. We are exploring new synthetic pathways, some of which involve biochemical reagents, to other silicon polymers and to phosphazene polymers.
A joint project with Dr. Wiley Youngs involves the synthesis and characterization of cyclic alkynes that contain metalloid or metallic heteroatoms (heterocyclynes) and we recently published a review on this topic. Newer areas of study include triangular heterocyclynes with metalloid-metalloid or metal-metal bonds and platinum square heterocyclynes in which the sides of the square consist of only alkyne and platinum atom fragments.
A newer area of research is the study of nonclassical ligands for metal coordination. We are examining the use of carbene and other novel ligands to control the reactivity of a metal center. This chemistry can be applied to all the projects listed above.
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| Selected Publications |
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Kalikhman, I, Gostevskii, B., Botoshansky, M., Kaftory, M., Tessier, C.A., Panzner, M.J., Youngs, W.J., Kost, D. Octahedral and Bicapped-Tetrahedral Silicon Configurations in the Solid State and Their Dynamic Co-existence in Solution. Organometallics, 2006, 25, 1252-1258.
"Ortho-Arene Cyclynes, Related Heterocyclynes and Their Metal Chemistry" Youngs, W.J.; Tessier, C.A.; and Bradshaw, J.D., Chem. Rev. 1999, 99, 3153-3180.
"Preparation of Carbosilane Dendrimers and Their Characterization Using 1H/13C/29Si Triple Resonance 3D-NMR Methods" Chai, M.; Pi, Z.; Tessier, C.; and Rinaldi, P.L., J. Am. Chem. Soc. 1999, 121, 273-279.
"Platinum-silicon Four-membered Rings of Two Different Structural Types" Sanow, L.M.; Chai, M.; McConnville, D.B.; Galat, K.; Simons, R.S.; Rinaldi, P.L.; Youngs, W.J.; and Tessier, C.A., Organometallics 2000, 19, 192-205.
"Synthesis and Structural Characterization of the Mono-Silyl Platinum(II) Complex: Cis-(2,6-Mes2C6H3(H)2Si)Pt(H)(PPr3)2" Simons, R.S.; Sanow, L.M.; Galat, K.J.; Tessier, C.A.; and Youngs, W.J., Organometallics, 2000, 19, 3994-3996. |
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