Browsing by Author "Díaz Valenzuela, Carlos"
Now showing items 1-20 of 33
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(Jorge Gregoire, 1994)Este trabajo investiga en que medida las relaciones de arbitraje que predice la teoría financiera se han verificado en los precios de futuro de IPSA desde su creación hasta la fecha
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(Universidad de Chile, 2014)
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(2010)Reaction of Cu(BF4)2 salt with the polymer [NP(OC6H4C(O)C–OC6H5)2]n (1) in THF affords three new polymers gels containing varied copper (II) ions contents, (2), (3), and (4). The nature of the copper (II) ions in the ...
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(2005)The phosphazene polymers carrying phenoxycarboxylic acids {[NP(O-C 6H 4-CO 2H) 2] x[NP-(O 2C 12H 8)] 1-x} n [x = 0.2 (1a), 0.35 (1b), 0.5 (1c), 0.7 (1d), 0.85 (1e), x = 1(2)] and the chiral analogues {[NP(O-C 6H 4-CO 2H) ...
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(Elsevier, 2014)Multilayer electrostatic assemblies described as {[FeTPyP(Crphen2Cl)4]8+/SiW12O404−}ni{[FeTPyP(Crphen2Cl)4]8+/SiW12O404−}ni and {[NiTPyP(Crphen2Cl)4]8+/SiW12O404−}ni{[NiTPyP(Crphen2Cl)4]8+/SiW12O404−}ni, where TPyP = ...
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(2008)Antecedentes: Los hipertensos presentan elevada prevalencia de obesidad lo que puede predisponer para el desarrollo de enfermedades músculo-esqueléticas (EME). Actualmente se desconoce la magnitud de estas patologías en ...
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(Universidad de Chile, 2004)Esta tesis aborda la aplicación de compuestos heterocíclicos aromáticos del tipo tiolactama como actinómetros de radiación UV. Se estudió la reactividad fotoquímica de los compuestos indolin-2-tiona (BC), benzimidazol-2-tiona ...
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(Universidad de ChileCyberDocs, 2010)
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(Chilean Chemical Society, 2010-09-14)The compounds N3P3[NH(CH2)3Si(OEt)3]6 (1), N3P3[NH(CH2)3Si(OEt)3]3[NCH3(CH2)3CN]3 (2) and N3P3[NH(CH2)3Si(OEt)3]3 [HOC6H4(CH2)CN]3 (3) undergo slow gelation at the interface oil/air at low temperatures to give perfect ...
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(Universidad de Chile, 2017)
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(ACS publications, 2014)Gold and silver complexes containing the monophosphane 1-PPh2-2-Me-l,2-C2B10H10 with different coordination numbers (2, 3) have been synthesized: [M(7,8-(PPh2)2-C2B9H10)(1-PPh2-2-Me- C2B10H10)] (M = Ag, Au) and ...
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(AMER CHEMICAL SOC, 2010-09-04)We present a method for the preparation and deposition of metallic microstructures and nanostructures deposited on silicon and silica surfaces by pyrolysis in air at 800 C of the corresponding metallophosphazene (cyclic ...
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(SPRINGER, 2006-09)Pyrolysis in air of the carborane-substituted polyphosphazene, {[NP({OCH2}(2)C2B10H10)](0.5) [NP({OCH2}(2)C2B9H10 center dot NBu4)](0.5)} (n) affords BPO4 crystals of varied sizes in the micro and nano regime.The materials ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2004-03-25)The series of complexes [N3P3(OC6H5)(5)X.MLn]PF6, X = OC6H4CH2CN, N(CH3)(CH2)(2)CN or OC6H4PPh2, and [N3P3(X)(6) (MLn)(6)](PF6)(6), X = OC6H4CH2CN or N(CH3)(CH2)(2)CN with MLn = CpFe(dppe) and CpRu(PPh3)(2) have been ...
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(SPRINGER, 2006-10)The reaction under very mild conditions of the polyspirophosphazene copolymer with pendant diphenylphosphine groups {[NP(O2C12H8)](0.85)[NP(OC6H4PPh2)(2)](0.15)}(n) (I) (O2C12H8= 2,2'-dioxybiphenyl) with [Au(THT)Cl] (THT ...
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Organometallic derivatives of polyphosphazenes as precursors for metallic nanostructured materials (SPRINGER, 2006-12)Co-polyphosphazenes containing anchored organometallic fragments are useful precursors for nanostructured metallic materials. Pyrolysis in air at 800 degrees yields metallic nanoparticles of the type, M degrees/M (x) O (y) ...
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(SPRINGER, 2006-06)Pyrolysis in air at 800 degrees C of [{NP(OC12H10)}(0.6){NP(OC6H4PPh2 center dot(pi-CH3C5H4)-Mn(CO)(2))(2)}(0.4)] (n) (1) in the solid state affords product 2 containing nanoclusters of Mn2P2O7 with sizes ranging from 50 ...
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(2012)The pyrolysis of several physical mixtures of AuCl(PPh 3) with polymeric [NP(O 2C 12H 8)] n or cyclic N 3P 3(O 2C 12H 8) 3 phosphazenes, formed as solid powders or films with different molar ratios, have been studied under ...
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(2004)The reaction of [NPCl2]n first with 2,2′-dihydroxybiphenyl and K2CO3 or (R)-(+)-2,2′-dihydroxy-1,1′-binaphthyl and Cs2CO 3, and subsequently with HO-C6H4-CO 2Prn and Cs2CO3, gave the phosphazene copolymers {[NP(O2C12H8)] ...
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(2008)Antecedentes: Medidas antropométricas de adiposidad como índice de masa corporal (IMC), circunferencia de cintura (CC), razón cintura-cadera (RCC) y razón cintura-estatura (RCE) son conocidas por estar asociadas a factores ...
