Reaction of an alkenyltitanocene

Frontier Elements: Connections with f-Elements

“…of the Cp* ligands) activation takes place as well. This is in marked contrast to observations for the Sc, Y and Lu analogues where at room temperature (80°C, Sc), smooth formation of phenyl derivatives is observed (10). [33,48].…”

“…CO, CO2, CS2, isonitriles, nitriles, ketones, acetylenes). Most of the work has been published and the interested reader is referred to these publications for detailed information [5][6][7][8][9][10][11].…”

“…(1) R = alkyl, alkenyl; M = Li [9,10] R = allyl or substituted allyl; M = MgX [12] R = benzyl, aryl; M = MgX [13] The compounds are monomeric, 15 el compounds that tend to achieve coordinative saturation by reaction with solvent molecules, appropriate donor ligands or otherwise (e.g., with allyl ligands η 3 -coordination is observed). The compounds are extremely air-sensitive, and many of them are thermally labile (decomposing around or below room temperature, Table 1), and expose a high reactivity with respect to many reagents.…”

“…). The reactivity of a titanium-alkenyl derivative, Cp2Ti(trans-(CH3)=CHCH3), has been investigated [10]. The overall impression is a very close analogy with Cp2TiR (R = aryl) systems.…”

Titanocene derivatives containing titanium–carbon σ-bonds

“…109,219 Treatment of dicyclopentadienyltitanium(III) derivatives with diphenyl disulfide is also accompanied by the oxidation of Ti(III) to Ti(IV) with the retention of the Ti7C s -bond. 102,103,107 In some cases, reaction of dicyclopentadienyltitanium(III) s-derivatives, e.g., complexes 120 and 121, with iodine also occurs with the retention of the Ti7C s-bond resulting in titanium(IV) derivatives. 103,220 Sometimes, reduction of titanocene s-derivatives occurs with the retention of the metal ± carbon s-bond.…”