Metal carbonyl chemistry. Part IX. Improved syntheses and some reactions of tetracarbonylcyclo-octafluorotetramethyleneiron
| Autor: | M. M. Germain, R. N. Haszeldine, P. W. Wiggans, R. Fields |
|---|---|
| Rok vydání: | 1970 |
| Předmět: |
chemistry.chemical_classification
Difluorocarbene Phosphorus pentachloride Metal carbonyl Chloride Medicinal chemistry Inorganic Chemistry chemistry.chemical_compound chemistry Heterocyclic compound Pyridine medicine Organic chemistry Tetrafluoroethylene Physical and Theoretical Chemistry medicine.drug Carbon monoxide |
| Zdroj: | Journal of the Chemical Society A: Inorganic, Physical, Theoretical. :1964 |
| ISSN: | 0022-4944 |
| Popis: | Improved syntheses of tetracarbonylcyclo-octafluorotetramethyleneiron by u.v. irradiation of tetrafluoroethylene with either nonacarbonyldi-iron or a mixture of pentacarbonyliron and dodecacarbonyltri-iron are described. Ligands displace carbon monoxide from the heterocyclic compound to form complexes of the types (CF2)4Fe(CO)3L [L = PPh3, AsPh3, SbPh3, P(OPh)3, or P(OEt)3], and (CF2)4Fe(CO)2L2[L = P(OEt)3 or pyridine; L2= 2,2′-bipyridyl, o-phenanthroline, or Ph2P·CH2·CH2·PPh2]. The diphosphinoethane also gives the bridged complex [(CF2)4Fe(CO)3PPh2CH2]2. Ring cleavage is observed with sulphuric acid, tin(IV) chloride, sulphur, chlorine, phosphorus pentachloride, or an excess of bipyridyl. The possibility that the formation of hexafluoropropene in the reactions with an excess of 2,2′-bipyridyl, tin(IV) chloride, sulphur, and sulphuric acid involves difluorocarbene bonded to iron is considered. |
| Databáze: | OpenAIRE |
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