Browsing by Author "Terraza, C. A."

Now showing items 1-4 of 4

    • Electron spin resonance studies in acrylamide polymerization using rhenium complexes as photosensitizers 
      Olea Azar, Claudio; Terraza, C. A.; Guerrero, J.; Rigol Olsen, Carolina; Recabarren Gajardo, Gonzalo Iván (SOCIEDAD CHILENA DE QUIMICA, 2002-09)
      Acrylamide can be polymerized using new catalytic systems. These are based on rhenium complexes as photosensitizers with triethylamine (TEA). Electron Spin Resonance (ESR) was used for the detection of radicals species ...
    • Methyl, ethyl, isopropyl and tert-butyl 3-oxo-2-(triphenylphosphoranylidene)butyrates, a common pattern a ... 
      Castañeda Magliona, Fernando; Terraza, C. A.; Garland, María Teresa; Bunton, Clifford A.; Baggio, Ricardo (MUNKSGAARD INT PUBL LTD, 2001-02)
      The crystal structures of four alkyl 3-oxo-2-(triphenylphosphoranylidene)butyrates, where the alkyl group is methyl (C23H21O3P .0.5C(6)H(6)), (II), ethyl (C24H23O3P), (III), isopropyl (C25H25O3P), (IV), or tert-butyl ...
    • Preferred conformations of stabilized phosphorus ylides 
      Castañeda Magliona, Fernando; Terraza, C. A.; Bunton, Clifford A.; Gillitt, N. D.; Garland, María Teresa (TAYLOR & FRANCIS LTD, 2003-09)
      The stabilized phosphorus ylides, Ph3P=C(CO.R')CO.OR, 1, R=Et, R' =CH2P+Ph3; 2, R=R'=Me; 3, R=Et, R'=Me; 4, R=Pr-i; R'=Me, 5, R=Bu-t; R'=Me, adopt a near planar conformation in the crystal which allows extensive electronic ...
    • Study of the prolonged release of theopylline from polymeric matrices based on grafted chitosan with acrylamide 
      Tapia Villanueva, Cristián; Costa, Edda; Terraza, C. A.; Munita, A. M.; Yazdani-Pedram Zobeiri, Mehrdad (GOVI-VERLAG GMBH, 2002-11)
      The aim of this work was to study the performance of chitosan (CB) grafted with acrylamide (CB-g-A) as prolonged drug release matrix as compared with unmodified chitosan. A non-pH dependent swelling behaviour for the matrix ...