Titanocene
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| Surname | Titanocene | |||||||||
| Molecular formula | C 10 H 10 Ti | |||||||||
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| Molar mass | 177.88 g mol −1 | |||||||||
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | ||||||||||
Titanocene belongs to the series of metallocenes . The monomer of titanocene with the empirical formula C 10 H 10 Ti has not yet been detected in the condensed phase. However, the decamethyl derivative (C 5 (CH 3 ) 5 ) 2 Ti does exist . Titanocene contains titanium in the +2 oxidation state . It is therefore a complex with 14 valence electrons . Because of this, titanocene is also a powerful oxidizer .
structure
Since there are still four electrons missing to achieve a stable 18-valence electron configuration , a binuclear titanium complex is formed from monomeric titanocene. The two Hydridobrücken here form 2-electron-3 center bonds and from two cyclopentadienyl ligand , a forming Fulvalendienyl that both cores bridged, so it forms a 16-valence electron from.
presentation
Titanocene can be produced by reacting elemental sodium with titanocene dichloride .
Further synthesis possibilities are given by the thermolysis of dicyclopentadienyldiphenyltitanium (Cp 2 Ti (C 6 H 6 ) 2 ) or dicyclopentadienyldimethyltitanium (Cp 2 Ti (CH 3 ) 2 ) (Cp = cyclopentadienyl).
See also
Individual evidence
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
literature
- AF Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 101st edition. Walter de Gruyter, Berlin 1995, ISBN 3-11-012641-9 , p. 1700.
- Hans Brintzinger, John E. Bercaw: Nature of so-called titanocene, (C 10 H 10 Ti) 2 , in: J. Am. Chem. Soc. , 1970 , 92 , pp. 6182-6185; doi : 10.1021 / ja00724a013 .