Reactions of phosphine-substituted alkylidyne carbonyltungsten complexes with dithiocarbamate ligands: Phosphine substitution and alkylidyne- carbonyl coupling
| Autor: | Andreas Mayr, Michael A. Kjelsberg, Richard T. Chang, Ki Cheung On, Donna Van Engen, Lee Tsung-Yi, Gregory A. McDermott |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
chemistry.chemical_classification
Stereochemistry Organic Chemistry Trimethylphosphine Carbyne Crystal structure Metallacycle Biochemistry Medicinal chemistry Coupling reaction Inorganic Chemistry chemistry.chemical_compound chemistry Materials Chemistry Physical and Theoretical Chemistry Triphenylphosphine Dithiocarbamate Phosphine |
| Zdroj: | Journal of Organometallic Chemistry. 479:47-53 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/0022-328x(94)84090-3 |
| Popis: | Reaction of the alkylidyne tungsten complexes cis - and trans - [W(CPh)Cl(CO) 2 (PMe 3 ) 2 ] with sodium diethyldithiocarbamate affords the ketenyl complex [W(OCCPh)(S 2 CNEt 2 )(CO)(PMe 3 ) 2 ]. Reaction of [W(CPh)Cl(CO)(PMe 3 ) 3 ] with diethyldithiocarbamate gives the dithiocarbamate-substituted alkylidyne tungsten complex [W(CPh)(S 2 CNEt 2 )(CO)(PMe 3 ) 2 ]. Reaction of cis -[W(CPh)Cl(CO) 2 (PPh 3 ) 2 ] with sodium dimethyldithiocarbamate leads to substitution of PPh 3 and formation of [W(CPh)(S 2 CNMe 2 )(CO) 2 (PPh 3 )]. The solid state structure of [W(CPh)(S 2 CNEt2)(CO)(PMe 3 ) 2 ] was determined by X-ray crystallography. Reaction of [W(CPh) (S 2 CNEt 2 )(CO)(Me 3 ) 2 ] with carbon monoxide in solution as well as in the solid state affords [W(OCCPh)( 2 CNEt2)(CO)(PMe 3 ) 2 ]. Pyrolysis of [W(OCCPh)(S 2 CNEt 2 )(CO)(PMe 3 ) 2 ] at 100°C in toluene solution gives [W(CPh)(S 2 CNEt 2 )(CO)(PMe 3 ) 2 ]. |
| Databáze: | OpenAIRE |
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