- Stereo-isomerism controls surface reactivity: 1-chloropentane-pairs on Si(100)-2×1.
Stereo-isomerism controls surface reactivity: 1-chloropentane-pairs on Si(100)-2×1.
Chemical communications (Cambridge, England) (2011-10-19)
K R Harikumar, Iain R McNab, John C Polanyi, Amir Zabet-Khosousi, Chiara Panosetti, Werner A Hofer
PMID22005512
ABSTRACT
Chloropentane forms asymmetric ('A') and symmetric ('S') pairs on Si(100)-2×1, differing in the direction of curvature of one pentane tail. Surprisingly this renders the rate of thermal reaction of 'A' fifteen times greater than 'S' in chlorinating room-temperature silicon. Correspondingly, for electron-induced reaction the energy threshold for A is 1 eV less than for S.
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