Chromium(III) complexes with terdentate 2,6-bis(azolylmethyl)pyridine ligands: Synthesis, structures and ethylene polymerization behavior

John Hurtado, Desmond Mac Leod Carey, Alvaro Muñoz-Castro, Ramiro Arratia-Pérez, Raúl Quijada, Guang Wu, René Rojas, Mauricio Valderrama

Resultado de la investigación: Contribución a una revistaEstudio breverevisión exhaustiva

19 Citas (Scopus)

Resumen

Reactions of 2,6-bis(bromomethyl)pyridine with 3,5-dimethylpyrazole and 1H-indazole yield the terdentate ligands 2,6-bis(3,5-dimethylpyrazol-1-ylmethyl)pyridine (5) and 2,6-bis(indazol-2-ylmethyl)pyridine (6). The molecular structure of the new compound 6 was determined by single-crystal X-ray diffraction. These ligands react with the CrCl3(THF)3 complex in THF to form neutral complexes of general formula [CrCl3{2,6-bis(azolylmethyl)pyridine-N,N,N}] (7, 8) which are isolated in high yields as stable green solids and characterized by means of elemental analysis, magnetic moments, IR, and mass spectroscopy. Theoretical calculations predict that the thermodynamically preferred structure of the complexes is the fac configuration. After reaction with methylaluminoxane (MAO) the chromium(III) complexes are active in the polymerization of ethylene.

Idioma originalInglés
Páginas (desde-hasta)2636-2641
Número de páginas6
PublicaciónJournal of Organometallic Chemistry
Volumen694
N.º16
DOI
EstadoPublicada - 15 jul 2009

Áreas temáticas de ASJC Scopus

  • Bioquímica
  • Química física y teórica
  • Química orgánica
  • Química inorgánica
  • Química de los materiales

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