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近几年来,人们对石墨(0001)表面(亦称基面)靠范德瓦耳斯力吸附CO分子的表面结构很感兴趣.用低能电子衍射实验结果表明:在温度T<25K时,石墨基面CO分子亚单层吸附层形成鲱骨式的结构,呈(2[3~(1/2)]×[3~(1/2)])30°公度相.CO分子轴线则平行于石墨基面,两者之间的倾角不明显,估计至多不超过5°但从X射线衍射方法绘出石墨基面吸附CO分子单层是呈(2[3~(1/2)]×2[3~(1/2)]R30°的公度相结构.为了说明X射线的实验结果,必须假定CO分子轴线与石墨基面的倾角成26°±12°,或者假定CO分子的取向有序的线度应小于分子质心平移有序的线度.
In recent years, the surface structure of graphite (0001) surface (also known as the base surface) by van der Waals force adsorption of CO molecules are very interested.According to low energy electron diffraction experimental results show that: at a temperature T <25K, graphite The basal plane CO subunit adsorbed layer formed a herringbone structure, which was (2 [3 ~ (1/2)] × [3 ~ (1/2)]) On the graphite substrate, the dip angle between the two is not obvious, it is estimated that no more than 5 °. But from the X-ray diffraction method to draw the graphite substrate adsorbed CO molecules monolayer is (2 [3 ~ (1/2)] × 2 [3 ~ (1/2)] R30 ° In order to illustrate the experimental results of X-rays, it is necessary to assume that the CO molecule axis is inclined at an angle of 26 ° ± 12 ° to the graphite base plane or that the orientation of CO molecules Ordered linearity should be less than the center of translation of molecular mass linear order.