期刊
PHYSICAL REVIEW LETTERS
卷 84, 期 7, 页码 1527-1530出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.1527
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Electrons from a scanning tunneling microscope were used to break a C-B bond in a single acetylene (HCCH) molecule adsorbed on Cu(001) at 9 K. The product ethynyl (CCH) was characterized by imaging, inelastic electron tunneling spectroscopy, and variable temperature measurements of the rotation rate. Significant changes in the vibrational spectra and bonding geometry accompanied HCCH dissociation. The ethynyl was further dehydrogenated to form dicarbon (CC). Dissociation studies of the isotopes HCCD and DCCD permitted unambiguous identification of the reaction products.
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