On the nature and reactivity of Cp2TiCH3

Synthesis, characterization and catalytic activity of the complex titanium bis(dimethylmalonate)–bis(diethylamido) in the polymerization of propylene

“…An additional signal with a hyperfine structure [a (3H) = 3.43 G, g = 2.0017] was observed. The observed splitting pattern of this signal is clearly corresponding to a Ti-Me moiety as previously reported for Cp 2 Ti 3+ -Me [a (3H) = 4.4 G] [81] (see Fig. 7a and b).…”

Frontier Elements: Connections with f-Elements

“…For R = alkyl, aryl the thermal decomposition of the compounds was studied in some detail [8,9,22]. Relevant for our discussion here is that the same stoichiometry is found; RH formation is quantitative 2:…”

“…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].…”

“…Stabilisation by adduct formation is observed for R = alkyl e.g. in THF solution or with phosphines [8], for the aryl compounds stabilizing ligands are, e.g., N2 (formation of (Cp2TiR)2N2, [20]), R'C N and R'N C [5,7]. It is assumed that ligand L blocks one metal valence orbital otherwise involved in the decomposition reaction and in combination with R produces an effective steric screening of the metal.…”

Low Valent Complexes of Titanium

“…145 The low temperature reduction (-80 °C) of [TiCl 2 Cp 2 ] with potassium naphthalenide was found to produce the black complex (113) instead of the green fulvalene-bridged dimer formed with sodium naphthalenide or sodium metal. 148 Slow cooling of a THF solution of (113) gave (113) brown/black crystals of a bis(THF) adduct (114) which was characterized by X-ray crystallography. This showed the presence of a C 5 H 4 cyclopentadienyl ligand bridging two titanium atoms, being 7r-bonded to one and c-bonded to the other.…”