Benzotriazole (BTA) adsorption on clean Cu(100) and oxygen reconstruct
ed Cu(110)-2 X 1 and c(6 X 2) surfaces has been investigated by scanni
ng tunneling microscopy (STM). The STM images show that BTA forms the
c(4 x 2) commensurate phase on the clean Cu(110)-1 X 1 surface. On the
other hand, STM images of BTA adsorbed on the oxygen-induced Cu(110)-
2 X 1 surface show a fully disordered structure. From a kinetic point
of view, BTA molecules should adsorb preferentially on the oxygen-indu
ced Cu(110)-2 X 1 added row compared to the clean Cu(110) surface.