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Open Access Discrimination between S2− and SO2− Sites in Mixed Crystal Compounds Containing Co and Co/Mo Clusters by 59Co-NMR Spectroscopy, and the Relevance for HDS Catalysis

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In aqueous solutions of the mixed crystal compounds with formal composition K8[Co4−x Mo x S4−y (SO) y (CN)12·nH2O (x = 0–2; y = 0–2) i) there are distinct CoS, Co(SO), and Co(SO)2 sites and ii) no hetero-metal clusters are present. These results, revealed by 59Co–NMR, could principally not be disclosed by single crystal X-ray structure analysis. The NMR data also suggest a stable dinuclear cobalt-sulphur cluster in solution. The relevance for HDS catalysis is discussed.

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Document Type: Research Article

Publication date: September 1, 1992

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  • International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions

    CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.

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