| Autor: |
Shubin, A. A., Nechitailova, R. S., Bezbozhnaya, T. V. |
| Předmět: |
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| Zdroj: |
Kinetics & Catalysis; Jul2004, Vol. 45 Issue 4, p478-482, 5p |
| Abstrakt: |
It was found that the β-iodovinyl and β-chlorovinyl complexes of platinum(IV) undergo decomposition in acidic aqueous solutions in the presence of NaI (2.5 M) with the simultaneous formation of acetylene and a corresponding vinyl halide RX (X = Cl, I). The kinetics and the composition of products are consistent with a mechanism that includes an equilibrium step of the reduction of the β-halovinyl complexes of Pt(IV) by iodide ions to form corresponding Pt(II) derivatives; the degradation of the above organoplatinum compounds by halogen β-elimination to form acetylene; and a step of the protodemetallation of the σ-vinyl derivatives of Pt(II), which leads to RX. The rate constants of individual steps and the equilibrium constant were estimated. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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