Reactivity of functionalised decamethyltitanocenes: Synthesis and structure of chiral monocyclopentadienyl titanium halogenidesстатья
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Дата последнего поиска статьи во внешних источниках: 2 декабря 2016 г.
Аннотация:The recently described unconventional substituted titanocene complex [Cp*Ti{eta(5)-C5Me3(CH2-CH(tBu)-eta(2)-C-2-CH(tBu)-CH2)}] (1) can be derivatised by simple means (Br-2, HX with X = Cl, Br) to generate the titanocene dihalogenides 2-Br, 2-Cl, which give in a subsequent reaction besides Cp*TiX3 (3-Br: X = Br, 3-Cl: X = Cl) the titanium complexes 4-Cl resp. 4-Br with one functionalised chiral cyclopentadienyl ligand. In the reaction of 1 with Et3N center dot 3HF an analogous isostructural titanocene dihalogenide 2-F as well as the unusual dimeric anionic heptafluoride 5 are formed. All complexes have been characterised spectroscopically, and X-ray crystal structure determinations were performed for 4-Cl and 2-F. (c) 2013 Elsevier B.V. All rights reserved.