Die Beständigkeit von (η 5-C 5 H 4 R) 2 Ti (C CR′) 2 in Abhängigkeit von den elektronischen Eigenschaften der Cyclopentadienyl-Liganden. Die Festkörperstruktur …

…, E Meichel, T Stein, S Back, E Hovestreydt

Index: Lang; Meichel; Stein; Back; Hovestreydt Journal of Organometallic Chemistry, 2001 , vol. 633, # 1-2 p. 71 - 78

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Abstract

The synthesis of the titanocene dichlorides (η5-C5H5)(η5-C5H4SiMe3) TiCl2 (3) and (η5- C5H4CO2R) 2TiCl2 (8a, R= CH3; 8b, R= CH2CH3), which contain either electron-donating or electron-withdrawing substituents at the cyclopentadienyl fragments is discussed. While the reaction of 8a or 8b with LiC CR′ in different stoichiometric ratios leads only to product mixtures from which no pure components could be isolated, treatment of 3 with ...