A rare example of a di-cationic hydrido carbonyl tetra-nuclear cluster, [H2Rh2Pt2(CO)7(PPh3)3]2+
| Autor: | Vadim I. Ponomarenko, Brian T. Heaton, Ivan S. Podkorytov, Jonathan A. Iggo, Sergey P. Tunik, Stanislav I. Selivanov |
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| Rok vydání: | 2010 |
| Předmět: |
biology
Hydride Chemistry Inorganic chemistry Cationic polymerization Nuclear magnetic resonance spectroscopy Mass spectrometry biology.organism_classification Inorganic Chemistry Metal Crystallography chemistry.chemical_compound visual_art Materials Chemistry Cluster (physics) visual_art.visual_art_medium Tetra Physical and Theoretical Chemistry Phosphine |
| Zdroj: | Inorganica Chimica Acta. 363:549-554 |
| ISSN: | 0020-1693 |
| Popis: | Addition of excess CF 3 CO 2 H (HTFA) to [Rh 2 Pt 2 (CO) 7 (PPh 3 ) 3 ], I , under nitrogen results in the formation of a salt ( X 2+ Y 2− ) , which contains only the second example of a di-cationic carbonyl hydride tetra-nuclear cluster , [H 2 Rh 2 Pt 2 (CO) 7 (PPh 3 ) 3 ] 2+ , X 2+ , and a presently partially characterized polymetallic anion Y 2− . The di-cation X 2+ has been characterized by mass spectrometry and a variety of multinuclear NMR methods. Since there is no difference in the electron count for I and X 2+ , it is probable that both I and X 2+ adopt similar butterfly metallic frameworks with a Rh–Rh hinge; in X 2+ , there are two bridging hydrides to the same wing-tip Pt but the phosphine site occupancies on the Rh 2 Pt 2 -framework in I and X 2+ are different. |
| Databáze: | OpenAIRE |
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