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用同步辐射角分辨偏振紫外光电子谱对K/Ru( 10 10 )面上吸附的CO分子轨道的对称性测量发现 :结合能在 11.2eV的CO - 4a1( 4σ)分子轨道对s偏振光 (在沿〈12 10〉的入射面 )是禁戒的 .结果表明由于K的强烈影响 ,CO的分子轨道重新排列 (sp2 杂化 ) .依据选择定则和分子轨道的对称性说明 ,sp2 再杂化的CO分子吸附的桥位取向是 <12 10 >晶向
Symmetry measurements of CO molecular orbitals adsorbed on the K / Ru (10 10) plane by synchrotron radiation angle resolved polarized ultraviolet (UV) photoelectron spectroscopy show that the binding energies of CO - 4a1 (4σ) orbitals at s The incident plane along <12 10> is forbidden. The results show that the molecular orbitals of CO are rearranged (sp2 hybridization) due to the strong influence of K. According to the selection rules and the symmetry of the molecular orbital, the sp2 recombination The bridging orientation of CO molecule adsorption is <12 10> orientation