| Abstract: | | 1. | Upon interaction of OH with Ni(100)m Ni(111), and Ni(110), stable, many-center forms of OH adsorption are produced. One-center and bridge forms of OH adsorption on nickel are kinetically unstable for the lowest surface coverages. | | 2. | On Ni(100) and Ni(111), a linear form of adsorption of OH is realized; on Ni(110), an angular form is realized, with a polar angle  0 = 20°. | | 3. | In the course of adsorption, there is a significant transfer of electron density from the metal to the OH, leading to an increase in the work function of the electrons and a decrease in the frequency of the  (O–H) vibration. For the angular forms of adsorption, bending vibrations  (O–H–Ni) are active. | | 4. | Upon adsorption of OH, a strong  -bond Ni(110)–OH is formed, as manifested in the UV photoelectron spectra by absorption in the 9.2 eV energy region. |
Institute of Catalysis, Siberian Branch, Russian Academy of Sciences. Institute of Kinetics and Catalysis, Bulgarian Academy of Sciences, Sofia. Translated from Zhurnal Strukturnoi Khimii, Vol. 33, No. 2, pp. 29–34, March–April, 1992. |
