1,1,1,1-Tetrakis(o-fluorophenylamino)silane tris[titanium(IV) chloride]. Evidence for a new titanium cation [Ti2Cl7]

Si(NHC^sub 6^H^sub 4^F-o)^sub 4^ · 3TiCl^sub 4^ (1) has been obtained from the disproportionation of (CF^sub 3^CH^sub 2^O)^sub 3^SiNHC^sub 6^H^sub 4^F-o and TiCl^sub 4^ in petroleum ether (40-60 °C) at -10 °C. The analytical (elemental analysis, molar conductance) and spectral (i.r., ^sup 1^H- and ^...

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Published in:Transition metal chemistry (Weinheim) 2002-10, Vol.27 (7), p.795
Main Authors: Narula, Suraj P, Soni, Sajeev, Malhotra, Rajesh, Meenu, Puri, Jugal K
Format: Article
Language:English
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Summary:Si(NHC^sub 6^H^sub 4^F-o)^sub 4^ · 3TiCl^sub 4^ (1) has been obtained from the disproportionation of (CF^sub 3^CH^sub 2^O)^sub 3^SiNHC^sub 6^H^sub 4^F-o and TiCl^sub 4^ in petroleum ether (40-60 °C) at -10 °C. The analytical (elemental analysis, molar conductance) and spectral (i.r., ^sup 1^H- and ^sup 19^F-n.m.r.) data suggested that (1) behaves as [Si(NHC^sub 6^H^sub 4^F-o)^sub 4^ · Ti^sub 2^Cl^sub 7^]^sup +^ [TiCl^sub 5^]^sup -^. The presence of these ions has been confirmed by characterising the products of metathetical reactions of (1) with R^sub 4^NX (R = Bu and Et; X = I and Br) and with AgNO^sub 3^. The data suggest the presence of a new titanium cation [Ti^sub 2^Cl^sub 7^]^sup +^.[PUBLICATION ABSTRACT]
ISSN:0340-4285
1572-901X
DOI:10.1023/A:1020397805440