Browsing by Author "Clavijo Campos, Ernesto"
Now showing items 1-20 of 28
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(Universidad de Chile, 2011)
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(1975)Coriolis coupling constants and the inertia defect for cis- and trans-1,2-dichloroethylene have been calculated, using force constants obtained by the iterative consistency method. The results obtained are compared with ...
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(John Wiley & Sons, 2013)Raman and surface enhanced Raman scattering (SERS) spectroscopies were used to study the pH effect (7 to 9) on the interaction of arginine (Arg) with colloidal Ag nanoparticles (AgNps). A new methodology was implemented ...
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(Universidad de Chile, 2013)
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(Taylor and Francis Inc., 2016)© 2016, Copyright © Taylor & Francis Group, LLC. The natural dyes lawsone and plumbagin (1,4-naphthoquinones) were studied by using fluorescence, Raman, infrared (IR), surface-enhanced Raman scattering (SERS), and ...
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(1998)The infrared spectra of naphthalocyanine (H2Nc) and its copper(II) complex (CuNc) were registered in the region 4000-450 cm-1. These compounds were deposited onto a smooth copper surface and their specular infrared spectra ...
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(Elsevier, 1996)FT-IR spectra of the title compounds and derivatives were measured in the range 4000-120 cm-1. A complete experimental spectral assignment has been performed. A simplified normal coordinate treatment orientates some ...
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(1985)By means of the force field and mean amplitudes of vibration of furan, thiophene, selenophene and tellurophene molecules, we have concluded that the ground-state aromaticity order in the series is thiophene > tellurophene ...
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(1990)The IR spectra of nitrobenzene-do and -ds were recorded in gas and liquid phases at 25° C and in amorphous solid phase at -170°C. The appearance of new bands and intensity changes going from liquid to solid phase spectrum, ...
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(1996)The insertion of polyethyleneoxide in a lamellar copper iron sulfide of formula CuFeS2 by an exchange reaction of potassium from KCuFeS2 with an aqueous solution of the polymer was performed. The characterization of the ...
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(2014)A material characterization of two artworks discovered in the San Francisco Church, Santiago, Chile, was performed using micro-Raman spectroscopy. Structural painted beams and a wall painting that belong to the same time ...
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(1989)Raman and infrared spectra of evaporated uranyl superphthalocyanine (UO2SPc) films are reported. Raman spectra of UO2SPc (formed by five isoindoline subunits) depart from the general spectral trends observed in metallated ...
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(1988)Raman and infrared spectra of four α,β‐unsaturated ketones were studied. Surface‐enhanced Raman spectra were obtained on colloidal silver with two laser lines (514.5 and 647.1 nm). Evidence of strong chemisorption on the ...
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(1985)The influence of various common basic solvents on the i.r. spectra of N-methylaniline and its ortho- and para-nitro derivatives has been studied. The behaviour of the frequency v(N-H) depends on the donor strength of the ...
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(U. S. Department of Justice Drug Enforcement Administration, 1986-11)We present the IR, UV, 1H- and 13C-NMR spectra of 1-(2,5- dimethoxy-4-nitrophenyl)-2-aminopronane (DON), whose hallucinogenic properties have been recently discovered. The data presented here should orove useful for the ...
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(1997)An infrared study of the macrocycles cyclam, cyclamdione and its Cu(II) complexes has been performed. The specular reflectance infrared spectrum was recorded and analyzed for the ligands and complexes deposited onto a ...
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(2009)The vibrational spectra of trans-p-coumaric acid (pCA) and syringic acid (SA) are discussed. The spectral fingerprints of the organic acids observed in the infrared and Raman spectra are assigned to fundamental vibrational ...
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(Elsevier, 2013)Prismatic silver nanoparticles (PNps) were used in the surface enhanced Raman scattering (SERS) study of the antioxidant alkaloid boldine (5,6,6a,7-tetrahydro-1,10-dimethoxy-6-methyl-4H-dibenzo[de,g]quinoline-2,9-diol). ...
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(Elsevier, 2002)A complete assignment of the infrared spectra of the title macrocycles was carried out on the basis of well-documented references and a normal coordinate analysis based on a simplified molecular model. The structure of the ...
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Surface-enhanced Raman scattering and theoretical study of the bilichromes biliverdin and bilirubin (Taylor and Francis Inc., 2016)© 2016, Copyright © Taylor & Francis Group, LLC. The surface-enhanced Raman scattering spectra of biliverdin and bilirubin were obtained and analyzed; a physical silver ligand interaction was inferred. The structural ...
