Search Results - "Versiane, Otávio"

Synthesis, structure determination, NBO analysis and vibrational/electronic spectroscopic study of Iron(II) Bis(diethyldithiocarbamate) [Fe(DDTC)2] by Zepeda, Claudio Andrés Téllez, Coelho, Anilton, Versiane, Otávio, Mondragón, Maria Antonieta, Pessoa, Rodrigo Sávio, Soto, Claudio Alberto Téllez

“…•Iron(II) Bis(diethyldithiocarbamate) was synthesized following the graphical method.•Both experimental and theoretical methods corroborated the structure of…”
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Histidine Determination in the Presence of Copper in Diluted Alkaline Electrolyte by Adsorptive Stripping Voltammetry at the Mercury Film Electrode by Farias, Percio Augusto Mardini, Castro, Arnaldo Aguiar, Wagener, Angela de Luca Rebello, Miguel, Eliane Monsores, Cabral, Otávio Versiane

“…A stripping method for the determination of histidine at the submicromolar concentration levels is described. The method is based on controlled adsorptive…”
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Fourier transform infrared and Raman spectra of the complex cation diethyldithiocarbamate Cr(III) Di-hydrate, [Cr(DDTC)2(OH2)2]+. UV-Vis spectrum, DFT:B3LYP/6-311G(d, p) structural determination, vibrational and natural bond orbital analysis by Soares, Eliene Andrade, Téllez, Claudio, Fortes, Sabrina A., Coelho, Anilton, Versiane, Otavio, Ferreira, Glaucio B., Mondragón, Maria Antonieta, TéllezS, Claudio A.

“…•Vibrational spectroscopy.•UV-visible spectroscopy.•Natural bond orbitals (NBO).•Structure determination. [Cr(DDTC)2(OH2)2]+. Diethyldithiocarbamate Cr(III)…”
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FT-IR vibrational spectrum and DFT:B3LYP/6-31G and B3LYP/6-311G structure and vibrational analysis of glycinate–guanidoacetate nickel (II) complex: [Ni(Gly)(Gaa)] by Ramos, Joanna Maria, Versiane, Otavio, Felcman, Judith, Téllez S., Claudio A.

“…The glycinate–guanidoacetate nickel (II) complex was synthesized and obtained as a crystalline powder. The characterization of this complex was performed by…”
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Fourier transform infrared spectrum, vibrational analysis and structural determinations of the trans-bis(glycine)nickel(II) complex by means of the RHF/6-311G and DFT:B3LYP/6-31G and 6-311G methods by Ramos, Joanna Maria, Versiane, Otavio, Felcman, Judith, Téllez Soto, Claudio A.

“…The trans-bis(glycine)nickel(II) complex was synthesized, and the Fourier transform infrared spectra in the regions 4000–370 cm −1 and 700–30 cm −1 were…”
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Surface enhancement Raman scattering of tautomeric thiobarbituric acid. Natural bond orbitals and B3LYP/6-311+G (d, p) assignments of the Fourier Infrared and Fourier Raman Spectra by Téllez Soto, C.A., Ramos, J.M., Costa Junior, A.C., Vieira, Laís S., Rangel, João L., Raniero, L., Fávero, Priscila P., Lemma, Tibebe, Ondar, Grisset F., Versiane, Otavio, Martin, A.A.

“…[Display omitted] •The FT-IR and Raman spectra of ATB were carried out.•Spectra interpretation have been based on Infrared and Raman second derivative spectra,…”
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FT-IR vibrational spectrum and DFT:B3LYP/6-31G structure and vibrational analysis of guanidinoaceticserinenickel(II) complex: [Ni(GAA)(Ser)] by Ramos, Joanna Maria, Versiane, Otavio, Felcman, Judith, Soto, Claudio A. Téllez

“…Vibrational assignment and structural determination for the guanidinoaceticserinenickel(II) complex have been made through DFT:B3LYP/6-31G calculations. A full…”
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FT-IR vibrational spectrum and DFT:B3LYP/6-311G structure and vibrational analysis of bis-serinenickel(II) complex: [Ni(Ser) 2] by Ramos, Joanna Maria, Versiane, Otavio, Felcman, Judith, Téllez S, Claudio A.

“…The bis-serinenickel(II) complex was synthesized, and the Fourier-transforms infrared spectra in the regions 4000–370 and 700–30 cm −1 was measured. The second…”
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A desamidination process forming a novel guanidine derivative during the complexation between copper(II) and guanidinoacetic acid by de Miranda, Jussara L., Felcman, Judith, Versiane, Otavio, Herbst, Marcelo H.

“…A novel trianionic disubstituted guanidine, ( 1 N-carboxymethylguanidino)hydroxyacetic acid-C 5H 6N 3O 5), oag 3−, has been formed through a desamidination…”
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