ISSN:
0009-2940
Keywords:
Titanium amido complexes
;
Tripodal ligands
;
μ-Oxo complexes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Hydrolysis of the tripodal amidotitanium halides H3CC(CH2NSiMe3)3TiX (X = Cl: 1a; Br: 1b) in the presence of Et3N affords the linear μ-oxo-bridged complex [H3CC(CH2NSiMe3)3Ti]2 (μ-O) (3) which was characterized by X-ray crystallography. Treatment of H3CC(CH2NiPr)3TiX (X = Cl: 2a; Br: 2b), obtained in low yields, under the same conditions only leads to decomplexation of the amido ligand. Under conditions of very slow exposure to H2O the primary addition product of water across two Ti-N bonds in 2a could be isolated and was characterized as [H3CC(CH2-i(μ-Cl)]2(μ-O) (4), the crystal structure analysis establishing a triply bridging central Ti(μ-O)(μ-Cl)2 Ti unit. Deprotonation with two molar equivalents of nBuLi and subsequent LiCl elimination afforded the μ-oxo complex [H3CC(CH2NiPr)3Ti]2(μ-O) (5).
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19961291023