Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 8 May 1992:
Vol. 256. no. 5058, pp. 822 - 825
DOI: 10.1126/science.256.5058.822
Prev | Table of Contents | Next

Articles

Synthesis and Single-Crystal X-ray Structure of a Highly Symmetrical C60 Derivative, C60Br24

Fred N. Tebbe 1, Richard L. Harlow 1, D. Bruce Chase 1, David L. Thorn 1, G. Creston Campbell Jr. 1, Joseph C. Calabrese 1, Norman Herron 1, Robert J. Young Jr. 1, and E. Wasserman 1

1 Central Research and Development, E. I. du Pont de Nemours & Company, Inc., P.O. Box 80328, Wilmington, DE 19880-0328

C60 and liquid bromine react to form C60Br24, a crystalline compound isolated as a bromine solvate, C60Br24(Br2)x, The x-ray crystal structure defines a new pattern of addition to the carbon skeleton that imparts a rare high symmetry. The parent C60 framework is recognizable in C60Br24, but sp3 carbons at sites of bromination distort the surface, affecting conformations of all of the hexagonal and pentagonal rings. Twenty-four bromine atoms envelop the carbon core, shielding the 18 remaining double bonds from addition. At 150° to 200°C there is effectively quantitative reversion of C60Br24 to C60 and Br2.

Submitted on January 24, 1992
Accepted on March 18, 1992


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Production of Perfluoroalkylated Nanospheres from Buckminsterfullerene.
P. J. Fagan, P. J. Krusic, C. N. McEwen, J. Lazar, D. H. Parkert, N. Herron, and E. Wasserman (1993)
Science 262, 404-407
   Abstract »    PDF »
C60H2: Synthesis of the Simplest C60 Hydrocarbon Derivative.
C. C. Henderson and P. A. Cahill (1993)
Science 259, 1885-1887
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)