The regiospecific reaction of diphenylacetylene with bis(cyclopentadienyl)-(o-fluorobenzyne)titanium. The crystal structure of the Cr(CO)3 derivative of 1,1-bis(cyclopentadienyl)-2,3-diphenyl-7-fluorotitanole
| Autor: | F. W. B. Einstein, Richard H. Jones, William R. Cullen, Ian R. Butler |
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| Rok vydání: | 1993 |
| Předmět: |
Nitrile
Stereochemistry Organic Chemistry Crystal structure Metallacycle Biochemistry Medicinal chemistry Inorganic Chemistry chemistry.chemical_compound chemistry Cyclopentadienyl complex Materials Chemistry Physical and Theoretical Chemistry Metallocene Diphenylacetylene Derivative (chemistry) Monoclinic crystal system |
| Zdroj: | Journal of Organometallic Chemistry. 462:C6-C9 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/0022-328x(93)83382-6 |
| Popis: | Diphenylacetylene reacts with the pyrolysis product of bis(cyclopentadienyl)-bis( o -fluorophenyl)titanium to afford predominantly one isomer of the expected titanole. The crystal structure of the Cr(CO) 3 derivative 4 of the titanole shows that the fluorine is in the 7-position indicating that attack of the acetylene on the benzyne intermediate occurs along the less sterically hindered path. Compound 4 : monoclinic, Cc , a = 7.983(2) A, b = 19.602(4) A, c = 16.834(4) A, β = 91.59(2)°. R f = 0.052 from 1069 observed reflections. |
| Databáze: | OpenAIRE |
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