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Issue 30, 2012
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Cationic Ti(IV) and neutral Ti(III) titanocene–phosphinoaryloxide frustrated Lewis pairs: hydrogen activation and catalytic amine-borane dehydrogenation

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Abstract

Titanium–phosphorus frustrated Lewis pairs (FLPs) based on titanocene–phosphinoaryloxide complexes have been synthesised. The cationic titanium(IV) complex [Cp2TiOC6H4P(tBu)2][B(C6F5)4] 2 reacts with hydrogen to yield the reduced titanium(III) complex [Cp2TiOC6H4PH(tBu)2][B(C6F5)4] 5. The titanium(III)–phosphorus FLP [Cp2TiOC6H4P(tBu)2] 6 has been synthesised either by chemical reduction of [Cp2Ti(Cl)OC6H4P(tBu)2] 1 with [CoCp*2] or by reaction of [Cp2Ti{N(SiMe3)2}] with 2-C6H4(OH){P(tBu)2}. Both 2 and 6 catalyse the dehydrogenation of Me2HN·BH3.

Graphical abstract: Cationic Ti(iv) and neutral Ti(iii) titanocene–phosphinoaryloxide frustrated Lewis pairs: hydrogen activation and catalytic amine-borane dehydrogenation

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Publication details

The article was received on 23 Jan 2012, accepted on 16 Mar 2012 and first published on 16 Mar 2012


Article type: Paper
DOI: 10.1039/C2DT30168G
Citation: Dalton Trans., 2012,41, 9067-9072
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    Cationic Ti(IV) and neutral Ti(III) titanocene–phosphinoaryloxide frustrated Lewis pairs: hydrogen activation and catalytic amine-borane dehydrogenation

    A. M. Chapman and D. F. Wass, Dalton Trans., 2012, 41, 9067
    DOI: 10.1039/C2DT30168G

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