Cyclopentadienyl-ruthenium and -osmium complexes
| Autor: | Tadeusz Wilczewski |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Inorganic chemistry
chemistry.chemical_element Ring (chemistry) Photochemistry Biochemistry Medicinal chemistry Reductive elimination Ion Inorganic Chemistry chemistry.chemical_compound Cyclopentadienyl complex Acetone Ruthenocene Materials Chemistry Molecule Organic chemistry Dehydrogenation Osmium Triphenylphosphine Physical and Theoretical Chemistry Chromatography Tetraphenylborate Chemistry Organic Chemistry Diglyme Alkali metal Oxidative addition Ruthenium Sandwich compound Dicyclopentadiene Yield (chemistry) Methanol Metallocene Ethylene glycol |
| Zdroj: | Journal of Organometallic Chemistry. 376:385-396 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/0022-328x(89)85148-4 |
| Popis: | The [CpRhH2(PPh3)2]+ cation in the simple and fast reaction of CpRuH(PPh3)2 with organic sulphonic acids in polar solvents (methanol, acetone) has been obtained in the form of ion-pairs. The reaction runs for several minutes, with practically quantitative yields. The dihydride complex cation obtained may be isolated from polar solutions as a sparingly soluble ion-pair [CpRhH2(PPh3)2][BPh4] with the tetrapehynborate anion. In the [CpRuH2(PPh3)2][sulphonate] ion-pairs a reduction-elimination process slowly proceeds with the formation of non-ionic compounds of the CpRu(sulphonate)(PPh3)2 type. Also, the effect of methyl substituents in the Cp-ring on shifts in the 31P NMR signals and MS(FD) investigations of the new compounds obtained have been described. Explanation of the new group signals in the MS(FD) spectra as originating from the fragments formed, containing two ruthenium atoms π-bonded to the phenyl ring of BPh4, i.e. [CpRu(η6-C6H5BPh2CpRu(η6-C6H5)]+, were proposed. In the case of compounds containing the PPh3 molecule, a similar phenomenon occurs. For fragments obtained in the MS(FD) spectra, the formula [RSO3CpRuPPh2CpRu(η6-C6H5)]+ was ascribed. |
| Databáze: | OpenAIRE |
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