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Issue 21, 2011
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Synthesis and structural characterization of novel tetranuclear organotitanoxane derivatives

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Abstract

Synthesis of the novel titanoxane compounds, [(TiCl)(TiOH){(Ti)[μ-(η5-C5Me4SiMe2O-κO)]2(μ-O)}2(μ-O)] (4) and [{Ti[μ-(η5-C5Me4SiMe2O-κO)](μ-O)}4] (5) by controlled reaction of the dinuclear titanium oxo complex [{Ti{μ-(η5-C5Me4SiMe2O-κO)}Cl]2(μ-O)] (1) with 2 equiv of LiOH is reported. Complex 4 is innovative and remarkable. It is one of the rare known examples of tetranuclear stable terminal hydroxo titanium complexes, with an open-chained structure, which coincides with the transient metal monohydroxo proposed in the stepwise pathway employed to justify the formation of the hexanuclear complex [{Ti[μ-(η5-C5Me4SiMe2O-κO)](μ-O)}6] (3) from 1. 1H DOSY experiments were used to characterize complex 4. In addition, the structures of compound 5 and of precursor 1 were determined by single-crystal X-ray diffraction studies.

Graphical abstract: Synthesis and structural characterization of novel tetranuclear organotitanoxane derivatives

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Publication details

The article was received on 15 Oct 2010, accepted on 21 Mar 2011 and first published on 21 Apr 2011


Article type: Paper
DOI: 10.1039/C0DT01393E
Dalton Trans., 2011,40, 5728-5733

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    Synthesis and structural characterization of novel tetranuclear organotitanoxane derivatives

    M. Ventura, C. Ramírez de Arellano, M. E. G. Mosquera, G. Jiménez and T. Cuenca, Dalton Trans., 2011, 40, 5728
    DOI: 10.1039/C0DT01393E

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