Models of chemisorbed ethene and ethyne on Cu(111)
Studies of ethylene (ethene) and acetylene (ethyne) chemisorbed on Cu(111), a surface with which they interact relatively weakly, have led to the following proposed structures for the molecular adsorption complexes.
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A. Plan view of the Cu(111) surface showing the adsorption geometry of athylene and acetylene molecules at low temperatures. |
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B. Perspective view of the Cu(111) surface with an adsorbed acetylene molecule, illustrating the re-hybridisation of the carbon centres to a geometry more closely associated with a C=C double-bond configuration. |
Pictures adapted from the
BALSAC Picture Gallery by K. Hermann, Theory Department, Fritz-Haber-Institut, Berlin
