6 research outputs found
Vibrational spectra of the α-MIIC2O4.2H2O oxalato complexes, with MII = Co, Ni, Zn
The infrared and Raman spectra of the α-MIIC2O4â‹…2H2O oxalate complexes with MII = Co, Ni and Zn were recorded and briefly discussed on the basis of their structural peculiarities. The IR spectrum of a partially deuterated sample of α-ZnC2O4â‹…2H2O is also discussed, reinforcing some of the performed assignments in the lower energy spectral region.Se registraron los espectros de infrarrojo y Raman de los oxalato-complejos α-MIIC2O4â‹…2H2O con MII = Co, Ni, Zn y se los discute brevemente en base a sus peculiaridades estructurales. Asimismo, se discute el espectro IR de una muestra parcialmente deuterada de α-ZnC2O4â‹…2H2O el que permitiĂł reforzar algunas de las asignaciones realizadas en la zona espectral de baja energĂa.Fil: Wladimirsky, Alejandra. Universidad TecnolĂłgica Nacional; ArgentinaFil: Palacios, Daniel. Universidad TecnolĂłgica Nacional; ArgentinaFil: D Antonio, MarĂa C.. Universidad TecnolĂłgica Nacional; Argentina. Universidad Nacional de la Patagonia Austral; ArgentinaFil: Gonzalez Baro, Ana Cecilia. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - La Plata. Centro de QuĂmica Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de QuĂmica Inorgánica "Dr. Pedro J. Aymonino"; ArgentinaFil: Baran, Enrique JosĂ©. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - La Plata. Centro de QuĂmica Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de QuĂmica Inorgánica "Dr. Pedro J. Aymonino"; Argentin
Spectroscopic investigations of iron(II) and iron(III) oxalates
In an attempt to contribute to a better characterization of FeII and FeIII oxalate complexes, an investigation of their vibrational (infrared and Raman) and 57Fe-Mössbauer spectra was performed. It is shown that the two polymorphs, α and β, of FeC2O4.2H2O cannot be accurately differentiated with any of these spectroscopic methods, demonstrating the high structural similarity of these two crystalline forms. Partially deuterated samples of β-FeC2O4·2H2O were also investigated to improve the vibrational-spectroscopic analysis. In the case of Fe2(C2O4)3·4H2O, a structural model, derived from results of combined vibrational and Mössbauer data, could be proposed. The 298 K Mössbauer spectrum for this complex is discussed in detail for the first time.Facultad de Ciencias ExactasCentro de QuĂmica Inorgánic
Spectroscopic investigations of iron(II) and iron(III) oxalates
In an attempt to contribute to a better characterization of FeII and FeIII oxalate complexes, an investigation of their vibrational (infrared and Raman) and 57Fe-Mössbauer spectra was performed. It is shown that the two polymorphs, α and β, of FeC2O4•2H2O cannot be accurately differentiated with any of these spectroscopic methods, demonstrating the high structural similarity of these two crystalline forms. Partially deuterated samples of β-FeC2O4•2H2O were also investigated to improve the vibrational-spectroscopic analysis. In the case of Fe2(C2O4)3•4H2O, a structural model, derived from results of combined vibrational and Mössbauer data, could be proposed. The 298 K Mössbauer spectrum for this complex is discussed in detail for the first time
Spectroscopic investigations of iron(II) and iron(III) oxalates
In an attempt to contribute to a better characterization of FeII and FeIII oxalate complexes, an investigation of their vibrational (infrared and Raman) and 57Fe-Mössbauer spectra was performed. It is shown that the two polymorphs, α and β, of FeC2O4.2H2O cannot be accurately differentiated with any of these spectroscopic methods, demonstrating the high structural similarity of these two crystalline forms. Partially deuterated samples of β-FeC2O4·2H2O were also investigated to improve the vibrational-spectroscopic analysis. In the case of Fe2(C2O4)3·4H2O, a structural model, derived from results of combined vibrational and Mössbauer data, could be proposed. The 298 K Mössbauer spectrum for this complex is discussed in detail for the first time.Facultad de Ciencias ExactasCentro de QuĂmica Inorgánic
Vibrational spectra of the α-M<SUP>II</SUP>C<SUB>2</SUB>O<SUB>4</SUB>⋅2H<SUB>2</SUB>O oxalato complexes, with M<SUP>II</SUP> = Co, Ni, Zn
The infrared and Raman spectra of the α-MIIC2O4â‹…2H2O oxalate complexes with MII = Co, Ni and Zn were recorded and briefly discussed on the basis of their structural peculiarities. The IR spectrum of a partially deuterated sample of α-ZnC2O4â‹…2H2O is also discussed, reinforcing some of the performed assignments in the lower energy spectral region.Se registraron los espectros de infrarrojo y Raman de los oxalato-complejos α-MIIC2O4â‹…2H2O con MII = Co, Ni, Zn y se los discute brevemente en base a sus peculiaridades estructurales. Asimismo, se discute el espectro IR de una muestra parcialmente deuterada de α-ZnC2O4â‹…2H2O el que permitiĂł reforzar algunas de las asignaciones realizadas en la zona espectral de baja energĂa.Centro de QuĂmica Inorgánic
Vibrational spectra of magnesium oxalates
The infrared and Raman spectra of anhydrous MgC2O4 as well as those of the two polymorphic forms of the dihydrated oxalate, α-MgC2O4·2H2O and β-MgC 2O4·2H2O, were recorded and discussed on the basis of their structural peculiarities and in comparison with the spectra of natural α-MgC2O4·2H2O (the mineral glushinskite). Some comparisons between these polymorphs and with other, previously investigated, oxalate complexes were made. The IR spectra of partially deuterated samples of α-MgC2O4· 2H2O were also discussed, reinforcing some of the performed assignments.Fil: D'Antonio, Maria C.. Universidad Nacional de la Patagonia Austral. Unidad AcadĂ©mica RĂo Gallegos; Argentina. Universidad TecnolĂłgica Nacional; ArgentinaFil: Mancilla Haselbach, Nancy Beatriz. Universidad Nacional de la Patagonia Austral; ArgentinaFil: Wladimirsky, Alejandra. Universidad Nacional de la Patagonia Austral. Unidad AcadĂ©mica RĂo Gallegos; Argentina. Universidad TecnolĂłgica Nacional; ArgentinaFil: Palacios, Daniel. Universidad Nacional de la Patagonia Austral. Unidad AcadĂ©mica RĂo Gallegos; Argentina. Universidad TecnolĂłgica Nacional; ArgentinaFil: Gonzalez Baro, Ana Cecilia. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - La Plata. Centro de QuĂmica Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de QuĂmica Inorgánica "Dr. Pedro J. Aymonino"; ArgentinaFil: Baran, Enrique JosĂ©. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - La Plata. Centro de QuĂmica Inorgánica "Dr. Pedro J. Aymonino". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de QuĂmica Inorgánica "Dr. Pedro J. Aymonino"; Argentin