Nickel Complexes with Heterobutadiene Ligands
| Autor: | Hans H. Karsch, Andreas W. Leithe, Eva Witt, Manfred Reisky |
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| Rok vydání: | 1998 |
| Předmět: |
Steric effects
chemistry.chemical_classification Trigonal planar molecular geometry Trifluoromethyl Chemistry Organic Chemistry Inorganic chemistry chemistry.chemical_element Crystal structure Mass spectrometry Cycloaddition Coordination complex Inorganic Chemistry chemistry.chemical_compound Crystallography Nickel Physical and Theoretical Chemistry |
| Zdroj: | Organometallics. 18:90-98 |
| ISSN: | 1520-6041 0276-7333 |
| DOI: | 10.1021/om980450o |
| Popis: | The reactions of 4,4-bis(trifluoromethyl)-substituted hetero-1,3-dienes with Ni(cod)2 and Ni(PMe3)2(cod) afford stable coordination compounds containing a trigonal planar Ni(0) center. The substitution of co-ligands by tert-butylisonitrile leads to five-membered nickelacycles by an unprecedented oxidative [4+1] cycloaddition of the hetero-1,3-diene to Ni(0) under formation of new Ni−C and Ni−O or Ni−N bonds. The nature of the resulting nickelacycloheteropentene derivatives decisively depends on the electronic and steric nature of the hetero-1,3-dienes. All compounds have been characterized by NMR, IR, or mass spectroscopy. X-ray crystal structure determinations are reported for four typical examples. |
| Databáze: | OpenAIRE |
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