Unusual mercury-phosphorus coupling constants in the mercury(II) triphosphine complexes [Hg(η2-LL)(η1-dppm)2+ (LL = dppe OR dppp)
| Autor: | Paul Peringer, Maria Lusser |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
chemistry.chemical_classification
Coupling constant Denticity Inorganic chemistry chemistry.chemical_element Nuclear magnetic resonance spectroscopy Mercury (element) Inorganic Chemistry Crystallography chemistry Diphosphines Intramolecular force Materials Chemistry Chelation Physical and Theoretical Chemistry Inorganic compound |
| Zdroj: | Polyhedron. 6:655-657 |
| ISSN: | 0277-5387 |
| DOI: | 10.1016/s0277-5387(00)81040-2 |
| Popis: | The asymmetric complexes [Hg(LL)(LL′)]2+ (LL and LL′= dppm, dppe or dppp, LL ≠ LL′) are formed in an equilibrium mixture with the corresponding symmetric compounds from [Hg(Me2SO)6](O3SCF3)2 and the corresponding diphosphines. The bonding mode of dppe and dppp in the mixed complexes is chelating bidentate. The dppm ligands are monodentate and are involved in fast intramolecular exchange of the coordinated phosphorus atoms by the free phosphorus atoms. The mercury triphosphine complexes show unusual HgP coupling constants which are explained by the different s-character of the ligandHg bonds as a result of the fixed geometry of the chelate ligands differing from the ideal geometry of tricoordinate mercury(II). |
| Databáze: | OpenAIRE |
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