Reactivity of chlorodimethylsilyl-η5-cyclopentadienyltrichlorotitanium with nitrogen based donors. X-ray molecular structure of [Ti{η5-C5H4SiMe2[η1-N(2,6-Me2C6H3)]}Cl2]

This paper reports the reactivity of [Ti(η5-C5H4SiMe2Cl)Cl3], 1 towards nitrogen based donor reagents. Complex 1 reacts with lithium benzamidinato Li[PhC(NSiMe3)2] to afford [Ti(η5-C5H4SiMe2Cl){PhC(NSiMe3)2}Cl2] 2 and with lithium amide LiNMe2 to produce [Ti(η5-C5H4SiMe2NMe2)(NMe2)3] 3. The latter c...

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Bibliographic Details
Authors: Gómez Ramírez, Rafael|||0000-0001-6448-2414, Gómez Sal, Pilar|||0000-0002-9279-210X, Martín Alonso, Avelino|||0000-0002-9776-9670, Núñez Sánchez, Aurora, Real Manzano, Pedro Ángel del, Royo Gracia, Pascual
Format: article
Publication Date:1998
Country:España
Institution:Universidad de Alcalá (UAH)
Repository:e_Buah Biblioteca Digital Universidad de Alcalá
Language:English
OAI Identifier:oai:ebuah.uah.es:10017/4275
Online Access:http://hdl.handle.net/10017/4275
https://dx.doi.org/10.1016/S0022-328X(98)00627-5
Access Level:Open access
Keyword:Titanium
Amido-silylcyclopentadienyl
Amidotitanium
Alkyltitanium
Ciencia
Química inorgánica
Science
Chemistry, inorganic
Description
Summary:This paper reports the reactivity of [Ti(η5-C5H4SiMe2Cl)Cl3], 1 towards nitrogen based donor reagents. Complex 1 reacts with lithium benzamidinato Li[PhC(NSiMe3)2] to afford [Ti(η5-C5H4SiMe2Cl){PhC(NSiMe3)2}Cl2] 2 and with lithium amide LiNMe2 to produce [Ti(η5-C5H4SiMe2NMe2)(NMe2)3] 3. The latter compound was converted into the dihalide derivatives [Ti(η5-C5H4SiMe2NMe2)(NMe2)X2] [X=Cl (4) and Br (5)] by reaction with SiMe3X (X=Cl or Br, respectively). The constrained geometry derivatives [Ti{η5-C5H4SiMe2(η1-NR)}Cl2] (R=C6H56, 2,6-Me2C6H37 and 2-Me-6-iPr-C6H38) have been synthesized by treatment of 1 with the corresponding primary aryl amines H2NR. Complex 7 was readily converted into the dialkyl and diamido compounds [Ti{η5-C5H4SiMe2[η1-N(C6H3Me2)]}X2] (X=Me (9), CH2Ph (10), CH2SiMe3 (11) or NMe2 (13)) by metathesis using Grignard or organolithium reagents and into the monoalkyl derivative [Ti{η5-C5H4SiMe2[η1-N(C6H3Me2)]}MeCl] (12) by reaction with AlMe3. The molecular structure of complex 7 [Ti{(η5-C5H4SiMe2[η1-N(2,6-Me2C6H3)]}Cl2] was established by X-ray crystallography.

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