Atomic adsorption hexagonal, structure

A freshly prepared flame-annealed Au(100) surface has been found to be reconstmcted188,487,534,538 and the surface atoms exhibit a hexagonal close-packed structure to yield the (hex)-stmcture. One-directional long-range corrugation of 1.45 nm periodicity and 0.05 nm height has been found on the Au( 100) surface.188,488 When the reconstruction is lifted due to specific adsorption of SO - anions at more positive , the surface changes to a (1 x 1) structure.538... 

Finally, we examine the adsorption of C28 on the surface with a hexagon oriented to the trench site (T13). The optimized structure is shown in Figure 15-12(a) and (b). The atoms on the hexagon essentially reside at the same layer of the As dimers. Three distinct cr-bonds between C28 and the surface are formed with bond distances of 2.07lA, 2.07lA and 2.20lA, respectively. Two bonds are created via... 

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