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عنوان البحث(Papers / Research Title)


Study of the interaction of nitric oxide with Cu(100) and Cu(111) surfaces using low energy electron diffraction and electron spectroscopy


الناشر \ المحرر \ الكاتب (Author / Editor / Publisher)

 
محمد هاشم مطلوب الغرابي

Citation Information


محمد,هاشم,مطلوب,الغرابي , Study of the interaction of nitric oxide with Cu(100) and Cu(111) surfaces using low energy electron diffraction and electron spectroscopy , Time 28/12/2016 09:44:57 : كلية العلوم للبنات

وصف الابستركت (Abstract)


The adsorption of nitric oxide on Cu(100) and Cu(111) surfaces has been studied by combining X-ray and u.v. photoelectron spectroscopy with low energy electron diffraction

الوصف الكامل (Full Abstract)


The adsorption of nitric oxide on Cu(100) and Cu(111) surfaces has been studied by combining X-ray and u.v. photoelectron spectroscopy with low energy electron diffraction. At 80 K two molecular states, characterised by N(1s) values of 399.5 and 401 eV, have been assigned to “bent” and “linear” configurations, respectively. The bent form dissociates slowly at 80 K while the linear species desorbs above ? 170 K. Assignments of the “bent” and “linear” forms were facilitated by recourse to the known sterochemistry of metal nitrosyl complexes where a correlation between formal charge on the ligand and sterochemistry has been established. Furthermore the results are compared with the adsorption of NO on both clean nickel and nickel whose surface reactivity has been controlled by pre-exposure to oxygen.

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