Browsing by Author "Chavez, Ivonne"

Now showing 1 - 6 of 6
  • Thumbnail Image
    Item
    Catalytic effects of p-phenylene-bridged methylated binuclear ferrocenes on thermal decomposition of the main component of composite solid propellants
    (2018) Povea, Paula; Luis Arroyo, Juan; Carreno, Gustavo; Norambuena, Angel; Rios, Paulina L.; Belen Camarada, Maria; Chavez, Ivonne; Manuel Manriquez, Juan; Morales-Verdejo, Cesar
  • Thumbnail Image
    Item
    Experimental and Theoretical Studies of the ancillary ligand (E)-2-((3-amino- pyridin-4-ylimino)-methyl)-4,6-di-tert-butylphenol in Rhenium(I) core
    (2015) Carreno, Alexander; Gacitua, Manuel; Schott Verdugo, Eduardo Enrique; Zarate, Ximena; Manriquez, Juan Manuel; Preite, Marcelo Daniel; Ladeira, Sonia; Castel, Annie; Pizarro, Nancy; Vega, Andres; Chavez, Ivonne; Arratia-Perez, Ramiro
  • Thumbnail Image
    Item
    New Rh derivatives of s-indacene active in dehydrogenative silylation of styrene
    (ELSEVIER SCIENCE SA, 2006) Esponda, Edgardo; Adams, Christopher; Burgos, Francisco; Chavez, Ivonne; Manriquez, Juan M.; Delpech, Fabien; Castel, Annie; Gornitzka, Heinz; Riviere Baudet, Monique; Riviere, Pierre
    The mono- and bimetallic complexes [(2,6-diethyl-4,8-dimethyl-s-indacenide){Rh(COD)}] (1), anti-[(2,6-diethyl-4,8-dimethyl-s-indacenediide) {Rh(COD)}(2)] (2a), syn-[(2,6-diethyl-4,8-dimethyl-s-indacenediide){Rh(COD)}(2)] (2b) were synthesized and characterized spectroscopically and in the case of complex 2b, by means of X-ray diffraction. The C-13 and Rh-103 NMR studies suggest that the bonding mode of the indacenediide ligand can be described as intermediate between eta(3)- and eta(5)-coordination. This result was confirmed by the crystal structure of 2b as evidenced by the slippage of the rhodium atom towards the periphery of the ligand. Cyclic voltammetry studies revealed a strong intermetallic communication through the fused ring ligand. This property was further illustrated by higher activity and selectivity of binuclear complexes 2 for the catalytic dehydrogenative silylation of styrene. (c) 2006 Elsevier B.V. All rights reserved.
  • Thumbnail Image
    Item
    Novel and Convenient Synthesis of 2,7-Dialkyl-1,8-dihydro- as -indacenes
    (2019) Faúndez Gutiérrez, Rodrigo Esteban; Castillo, Francisco; Preite, Marcelo Daniel; Schott Verdugo, Eduardo Enrique; Zarate, Ximena; Manríquez M., Juan Manuel; Molins, Elies; Morales-Verdejo, César; Chavez, Ivonne
  • Thumbnail Image
    Item
    Synthesis and structure of some heterobimetallic complexes having a polyalkyl-s-indacenyl spacer
    (ELSEVIER SCIENCE SA, 2013) Morales Verdejo, Cesar; Martinez, Ivan; Mac Leod Carey, Desmond; Chavez, Ivonne; Manuel Manriquez, Juan; Matioszek, Dimitri; Saffon, Nathalie; Castel, Annie; Riviere, Pierre; Molins, Elies
    Three heterobimetallic complexes LmM(s-Ic')M'Ln (M = Fe, Ru or Mn; M' = Ni) having the same Cp* nickel moiety and based on a polyalkyl-s-indacenyl spacer (s-Ic' = 2,6-diethyl-4,8-dimethyl-s-indacenyl) were synthesized by reacting Cp* Ni(acac) with the lithium derivative of the parent monometalated complex. All three compounds were fully characterized and shown to adopt a trans geometry by X-ray crystallography. (C) 2012 Elsevier B. V. All rights reserved.
  • Thumbnail Image
    Item
    Toward the Synthetic Control of the HOMO-LUMO Gap in Binuclear Systems: Insights from Density Functional Calculations
    (AMER CHEMICAL SOC, 2010) Munoz Castro, Alvaro; Mac Leod Carey, Desmond; Morales Verdejo, Cesar; Chavez, Ivonne; Manuel Mariquez, Juan; Arratia Perez, Ramiro
    Computational methods based on density functional theory have been applied to address the design of tailored HOMO-LUMO gap bimetallic complexes. We focus our attention on the [Cp*Fe-(L)-FeCp*] system, where two ferrocenyl units are linked through the dianion of fused ring ligands such as pentalene, s-indacene, dicyclopenta-[b,g]-naphthalene, dicyclopenta-[b,l]-anthracene and dicyclopenta-[b,l]-tetracene Our DFT calculations on the title organometallic complexes suggest a controlled decrease in the HOMO-LUMO gap, which is desirable for studies on electron-transfer phenomena, as well as the design potential devices for molecular electronic purposes.