Synthesis, isolation and structural characterisation of alkoxytitanium triflate complexes


Davidson, M. G. and Johnson, A. L., 2011. Synthesis, isolation and structural characterisation of alkoxytitanium triflate complexes. European Journal of Inorganic Chemistry, 2011 (33), pp. 5151-5159.

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Treatment of [Ti(OiPr)4] with trimethylsilyl triflate results in the formation of [Ti(OiPr)3(OTf)] (2) in high yield. Subsequent treatment of the triflate derivative 2 with a series of facially coordinating N3-donor ligands results in the production of a series of charge-separated metal alkoxide salts of the general formula [{L}Ti(OiPr) 3][OTf] {L = tris(pyrazolyl)methane (3a), 1,3,5-triethyl-1,3,5- triazacyclohexane (3b), 1,3,5-tribenzyl-1,3,5-triazacyclohexane (3c), 1,3,5-tris(p-fluorobenzyl)-1,3,5-triazacyclohexane (3d), and 1,3,5-tris[(1S)-1-phenylethyl]-1,3,5-triazacyclohexane (3e)}. The products were characterized by 1H and 13C NMR spectroscopy and in the case of 3a-c by single-crystal X-ray diffraction. Reaction of 2 with 1,3,5-triphenyl-1,3,5-triazacyclohexane results in the formation of complex 4 [{L′}2Ti(OiPr)2(OTf)2], which contains two 3,4-dihydroquinazoline ligands (L′), a result of catalytic activation of the triazacyclohexane ligands by [Ti(OiPr)3(OTf)] towards electrophilic aromatic substitution.


Item Type Articles
CreatorsDavidson, M. G.and Johnson, A. L.
Related URLs
Uncontrolled Keywordslewis acids,titanium,alkoxides,triflates
DepartmentsFaculty of Science > Chemistry
Research CentresCentre for Sustainable Chemical Technologies
ID Code27757


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