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Closed Access item Tris(pyrazolyl)borate carbosilane dendrimers and metallodendrimers

Authors:Sánchez-Méndez, Alberto
Silvestri, Gustavo F.
Jesús, Ernesto de
Mata, F. Javier de la
Flores, Juan C.
Gómez, Rafael
Gómez-Sal, Pilar
Keywords:N ligands, Titanium, Palladium, Molybdenum, Dendrimers
Issue Date:7-Jun-2004
Publisher:John Wiley & Sons
Citation:European Journal of Inorganic Chemistry 2004(16): 3287 - 3296 (2004)
Abstract:The substituted ligands Me3SiC(pz)3 (1) and Me3SiOCH2C(pz)3 (2) have been prepared starting from HC(pz)3 and HOCH2C(pz)3. The molecular structure of compound 1 has been determined by X-ray diffraction studies, which show a propeller-like conformation of the pyrazolyl rings. Compound 2 has been found to be useful for the synthesis of [Mo(CO)3{Me3SiOCH2C(pz)3}] (3), [TiCl2(NtBu){Me3SiOCH2C(pz)3}] (4), and [PdCl2{Me3SiOCH2C(pz)3}] (5), through ligand exchange reactions. The characterization of the new complexes is compatible with a tridentate coordination of the ligands in complexes 3 and 4, and a bidentate coordination in 5 as confirmed by an X-ray analysis carried out with the palladium complex. The procedure has been extended for the synthesis of the carbosilane G1-[OCH2C(pz)3]4 (6) and the tetrametallic compound G1-[OCH2C(pz)3Mo(CO)3]4 (7) (G1 = Si(CH2CH2CH2Me2Si)4-).
Description:10 pages, 4 figures, 3 tables.
Publisher version (URL):http://dx.doi.org/10.1002/ejic.200400162
Appears in Collections:(ICMA) Artículos

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