VT Chemistry Department Faculty Page of Dr. Gordon Yee

	Faculty Members
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» Gordon T. Yee
Associate Professor, Inorganic Chemistry

gyee@vt.edu
office: 2103 Hahn Hall
phone: 540-231-3090
fax: 540-231-3255
Other Links: www.thinkwell.com
Group Site: http://filebox.vt.edu/artsci/chem/YeeLab
Course Page: http://www.chem.vt.edu/chem-dept/yee/Spring2004/IndexS04.htm

Education

B.S. - 9/79-6/83 - University of California, Berkeley, CA
Ph.D. - 9/83-3/90 - Stanford University, Stanford, CA
Postdoctoral Researcher - 4/90-8/91 - DuPont, Wilmington, DE Ohio State University

Research Interests

Magnetism, like gravity, is a physical phenomenon whose effects are easily observed and, at the same time, difficult to explain fully. Constructing magnets from molecular building blocks offers the ability to tune the properties of the solid and thereby probe details of the spin interactions on the atomic-molecular level. We have focused on two classes of compounds, ionic charge-transfer salts and radical anion bridged coordination polymers. The former, typified by the 1:1 salt derived from decamethylchromocene and dimethyl dicyanofumarate are structurally characterized pseudo-one-dimensional pi stacked solids that exhibit a variety of complex magnetic behaviors. Related solids can be prepared by, for instance, utilizing the diethyl ester as a building block instead. Radical anion bridged coordination polymer magnets offer one of the best hopes for commercialization because of their relatively high Tc's. We have recently discovered that the reaction of V(CO)₆ and a,a'-dicyanoperfluorostilbene (DCPFS) gives rise to an air-sensitive solid, presumed to be a network of V²⁺ cations bridged by DCPFS radical anions, that orders below 215 K. By varying the metal and bridging organic ligand, we hope to increase the critical temperature to above room temperature and to address the problem of air-sensitivity.

Selected Publications

"Two New Acceptor Building Blocks for 'High Tc' Coordination Polymer Magnets" Kaul, B. B. and Yee, G. T. Inorg. Chem. Acta., 2001, 326, 9-12.
"Design and Synthesis of a Library of Molecule-Based Magnets: the Charge-Transfer Salt Approach" Yee, G. T. and Kaul, B. B., J. Solid State Chem., 2001, 159, 420-427.
"A Charge-Transfer Salt Magnet Based on a Non-Cyanocarbon Acceptor, 1,4,9,10-Anthracenetetrone, and Decamethylferrocene" Kaul, B. B. and Yee, G. T., Polyhedron, 2001, 20, 1757-1759.
"Synthesis, Structure and Magnetic Characterization of a Charge-Transfer Salt Metamagnet, Decamethylferrocenium 2,3-Dicyano-1,4-Naphthoquinonide, [Fe(Cp*)2][DCNQ]" Yee, G. T.; Whitton, M. J.; Sommer, R. D.; Frommen, C. M. and Reiff, W. M. Inorg. Chem. 2000, 39, 1874-1877.
"Synthesis, Structure and Magnetic Properties of a New Charge-Transfer Salt Ferromagnet, Decamethylchromocenium Dimethyl Dicyanofumarate, T_Curie = 5.7 K" Kaul, B. B.; Sommer, R. D.; Noll, B. C. and Yee, G. T. Inorg. Chem. 2000, 39, 865-868.

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