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Thermal Decomposition of (Pentamethylcyclopentadienyl)titanium(IV) Complexes Containing Dialkylamido Ligands – X-ray Structure of [{η5:η2-C5Me4CH2CH2N(Me)CN(C6H3Me2)}TiCl2]

✍ Scribed by Mikhail Galakhov; Pilar Gómez-Sal; Avelino Martín; Miguel Mena; Carlos Yélamos

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
526 KB
Volume
1998
Category
Article
ISSN
1434-1948

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✦ Synopsis

led to the isolation of the complex [{η 5 :η 2 -C 5 Me 4 CH 2 CH 2 N(Me)CN(C 6 H 3 Me 2 )}-TiCl 2 ] (6) by insertion The new organometallic binuclear complexes [{Cp* Ti(NEt 2 )} 2 (µ-NEt) 2 ] (1), [(Cp*Ti) 2 (NMe 2 )(NHMe 2 )(µ-NMe)(µ-of one isocyanide molecule into the titanium-nitrogen bond in 5. The structure of 6 has been proved by an X-ray NCH 2 )] (2), and [(Cp*TiCl) 2 (µ-NMe) 2 ] (3) have been obtained by heating the dialkylamido derivatives [Cp*Ti(NR 2 ) n Cl 3-n ] diffraction study which showed the organic ligand, C 5 Me 4 CH 2 CH 2 N(Me)CN(C 6 H 3 Me 2 ), to be coordinated to the (R = Et, n = 3; R = Me, n = 2, 3) (Cp* = η 5 -C 5 Me 5 ) in solution and at different temperatures. The thermal decomposition of titanium atom via the cyclopentadienyl ring and a η 2iminocarbamoyl fragment. Heating of the trinuclear oxo [Cp*Ti(NMe 2 )Cl 2 ] at temperatures above 145 °C caused the activation of the pentamethylcyclo-pentadienyl ligand to derivative [{Cp*Ti(NMe 2 )} 3 (µ-O) 3 ] at 110 °C gave the complex [{Cp* 3 Ti 3 (NMe 2 )(µ-η 2 -CH 2 NMe)}(µ-O) 3 ] ( 4) where give the new, geometrically constrained, complex [{η 5 :η 1 -C 5 Me 4 CH 2 CH 2 N(Me)}TiCl 2 ] (5). Addition of the isocyanide an imine ligand bridges two of the three metallic centres.

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