A new lindqvist-type hexamolybdate cluster functionalized with the jt-donor ligand 4-bromo-2,6-dimethylphenylimido: Spectroscopic, electrochemical and structural studies

• MARCELA CORTÉS ^[1] ; MAURICIO FUENTEALBA ^[2] ; CAROLINA MANZUR ^[1] ; DAVID CARRILLO ^[1]
  1. [1] Pontificia Universidad Católica de Valparaíso

     Pontificia Universidad Católica de Valparaíso

     Valparaíso, Chile

     
  2. [2] Universidad de Chile

     Universidad de Chile

     Santiago, Chile

     
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 53, Nº. 1, 2008, págs. 1349-1352
• Idioma: inglés
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• Resumen

  • A new ionic organic-inorganic hybrid complex of formula («-Bu4N)2[Mo(¡0(18)(NR)]¹/2Me2CO, R = -C6H2-2,6-Me2-4-Br, (w-Bu4N)2[l]-i4Me2CO, has been prepared in acetonitrile by reacting tetrabutylammonium a-octamolybdate, («-Bu4N)4[0t-Mo8O26], with 2,6-dimethyl-4-bromoaniline hydrochloride, 2,6-Me2-4-Br-C6H2NH2HCl, using N,N'-dicyclohexylcarbodiimide, (C6H U)N=C=N(C6H11), as dehydrating agent. This complex, formulated as («-Bu4N)2[l]¹/2Me2CO, contains a C-Br group which can be functionahzed for constructing novel hybrid materials. The complex was fully characterized by IR, UV-Vis, 'H- and "C-NMR spectroscopies, and authenticated by single crystal X-ray diffraction analysis. The asymmetric unit contains two crystallographically independent anions, [l]²", differing by the orientation of the phenyl ring relative to the hexamolybdate skeleton, and one molecule of acetone. Both molecules differ in the angles Mo(l)-N(l)-C(l)= 172.2(6) and Mo(7)-N(2)-C(9)= 175.6(6)°. These angles, near to 180°, indicate the presence of a Mo=N triple bond