INVESTIGADORES
SILBESTRI Gustavo Fabian
artículos
Título:
Triz(pyrazolyl)methane ligands: Syntheses and structures of monometallic and metallodendritic complexes
Autor/es:
A. SÁNCHEZ-MÉMDEZ; G.F.SILBESTRI; E. DE JESÚS,; F.J. DE LA MATA; J.C. FLORES; R. GÓMEZ; P. GÓMEZ- SAL
Revista:
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Editorial:
Wiley- VCH
Referencias:
Lugar: Weinheim; Año: 2004 p. 3287 - 3296
ISSN:
1434-1948
Resumen:
The substituted ligands Me3SiC(pz)3 (1) and Me3Si-OCH2C(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-).
