Electronic structures of cluster compounds of molybdenum sulfide (MoS42-, Mo3S92-) and nickel molybdenum sulfide (Ni(MoS4)22-) by XPS studies
| Autor: | E. I. Stiefel, G. J. Hughes, Jerry Bernholc, W.-H. Pan, K. S. Liang |
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| Rok vydání: | 1987 |
| Předmět: |
chemistry.chemical_classification
Valence (chemistry) Chemistry Photoemission spectroscopy Inorganic chemistry Analytical chemistry chemistry.chemical_element Formal charge Electron spectroscopy Inorganic Chemistry Nickel X-ray photoelectron spectroscopy Physical and Theoretical Chemistry Spectroscopy Inorganic compound |
| Zdroj: | Inorganic Chemistry. 26:1422-1425 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/ic00256a019 |
| Popis: | XPS studies were performed on cluster compounds (TEA)/sub 2/MoS/sub 4/, (TEA)/sub 2/Mo/sub 3/S/sub 9/, and (TEA)/sub 2/Ni(MoS/sub 4/)/sub 2/ (TEA = tetraethylammonium). The results are analyzed on the basis of formal charge and molecular orbital considerations. The major features of the valence band spectra of (TEA)/sub 2/MoS/sub 4/ and (TEA)/sub 2/Mo/sub 3/S/sub 9/ are in good agreement with theoretical densities of state of recent calculations using the local density pseudopotential method. However, the XPS data show that the multiple excitation process is quite significant in the simple tetrahedral MoS/sub 4//sup 2 -/. The XPS of (TEA)/sub 2/Ni(MoS/sub 4/)/sub 2/ reveals a significant difference from the XPS of the other two compounds in the top valence band, which is attributed to the additional d electrons in Ni (formally d/sup 8/) compared to Mo (formally d/sub 2/). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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