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Science 26 November 1999:
Vol. 286. no. 5445, pp. 1719 - 1722
DOI: 10.1126/science.286.5445.1719
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Reports

Single-Bond Formation and Characterization with a Scanning Tunneling Microscope

H. J. Lee, W. Ho *

A scanning tunneling microscope (STM) was used to manipulate the bonding of a carbon monoxide (CO) molecule and to analyze the structure and vibrational properties of individual products. Individual iron (Fe) atoms were evaporated and coadsorbed with CO molecules on a silver (110) surface at 13 kelvin. A CO molecule was transferred from the surface to the STM tip and bonded with an Fe atom to form Fe(CO). A second CO molecule was similarly transferred and bonded with Fe(CO) to form Fe(CO)2. Controlled bond formation and characterization at the single-bond level probe chemistry at the spatial limit.

Laboratory of Atomic and Solid State Physics and Cornell Center for Materials Research, Cornell University, Ithaca, NY 14853-2501, USA.
*   To whom correspondence should be addressed. E-mail: wilsonho{at}ccmr.cornell.edu

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