Browsing by Author "Larrazábal Rojas, Guillermo"

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    • Complexation of sucrose with cobalt(III)bis(phenanthroline) 
      Parada Aliste, José; Bunel Torrealba, Sergio; Ibarra, Carmen; Larrazábal Rojas, Guillermo; Moraga, Exequiel; Gillitt, N. D.; Bunton, Clifford A. (ELSEVIER SCI LTD, 2000-10-20)
      The Delta-[Co(III)bis(phenanthroline)(sucrose)](3+) complex forms with little perturbation of the sucrose conformation, and complexation by HO-2(g) and HO-1(f).
    • Isomerization studies of ΔΛ,-[Ni(1,10-phen)2(S-aa)]+ systems 
      Larrazábal Rojas, Guillermo; Parada Aliste, José; Decinti Weiss, Emilio (1999)
      The Δ-Λ isomerization of partially resolved [Ni(1,10-phen)2(S-aa)]+ systems, where S-aa is S-phenylalaninate, S-isoleucinate, S-leucinate, S-valinate, or S-alaninate, has been studied at 15,20 and 25°C in methanol as ...
    • Stereoselective synthesis of dodecaammine-ì-hexoltetracobalt(III) in carbohydrates solution Sintesis ... 
      Larrazábal Rojas, Guillermo; Bunel Torrealba, Sergio; Ibarra, Carmen; Parada Aliste, José (2002)
      Reaction between cis-[Co(NH3)(H2O)(2)](3-) and ammonia in aqueous solution, in the presence of a carbohydrate, leads to the formation of the tetranuclear complex of cobalt (III): [Co-4(NH3)(12)(OH)(6)](6+) partially resolved. ...
    • The stereoselective synthesis of the Werner complex with substoichiometric sugars 
      Parada Aliste, José; Larrazábal Rojas, Guillermo; Aguirre Álvarez, Pedro; Zolezzi Carvallo, Santiago; Vega, Carmen; Garrido, Cristián (Sociedad Chilena de Química, 2008)
      A tetranuclear complex of Co(III) with hydroxo bridges, so-called “Werner Complex”, was synthesized in the presence of several sugars (1-8) with partial resolution of this complex. The sugars in 10 mol % with respect to ...
    • Sucrose bis(1,10-phenanthroline)cobalt (III). Predicted distortion at the octahedral center 
      Parada Aliste, José; Bunel Torrealba, Sergio; Ibarra, Carmen; Larrazábal Rojas, Guillermo; Gillitt, N. D.; Bunton, Clifford A. (PERGAMON-ELSEVIER SCIENCE LTD, 2002-10-01)
      The two 1,10-phenanthroline ligands in the mixed Delta-cobalt(III) complex with sucrose are in different environments relative to the sucrose ligand as shown by differences in their H-1 NMR signals and predicted by structural ...
    • The origin of optical activity in complexes of the type [Co(diimine)2carbohydrate]2+ 
      Parada Aliste, José; Larrazábal Rojas, Guillermo (2004)
      Complexes of the type Delta- and Lambda-[Co(diimine)(2)carbohydrate](2+) were synthesized with the diimines: 1,10-phenanthroline and 2,2'-bipyridine and with the carbohydrates: aminosugars, hexoses, pentoses and sucrose, ...