Showing papers by "Enrique J. Baran published in 1984"
TL;DR: In this article, a study of mixed apatites of the type Ca10 (PO4)6-X( VO4 )X(OH)2 has been undertaken in order to obtain an insight into the structural consequences of the incorporation of vanadium in the inorganic phase of bone.
31 citations
8 citations
TL;DR: In this paper, the behavior of Sn3PO4F3 in aqueous solutions, has been investigated under different experimental conditions, and it is shown that the compound possesses a high hydrolytic stability.
Abstract: Es wurde das Verhalten von Sn3PO4F3 in wasrigen Losungen unter verschiedenen experimentellen Bedingungen untersucht. Dabei wurde festgestellt, das diese Phase eine sehr hohe hydrolytische Stabilitat besitzt. Das thermische Verhalten wurde mittels TG/DTA-Messungen untersucht und die Zersetzungsprodukte rontgenographisch und durch 119Sn-Mosbauer-Spektroskopie charakterisiert. Eine eingehende Untersuchung des SnF2/H3PO4-Systems erlaubte weiterhin, neue Darstellungsmethoden fur Sn3PO4F3 und monoklines Sn3(PO4)2 auszuarbeiten.
Hydrolytic and Thermal Behaviour of Sn3PO4F3
The behaviour of Sn3PO4F3 in aqueous solutions, has been investigated under different experimental conditions. It is shown that the compound possesses a high hydrolytic stability. The thermal behaviour has been analyzed by means of TG/DTA measurements and the decomposition products have been characterized by X-ray diffraction and 119Sn-Mossbauer spectroscopy. A detailed study of the SnF2/H3PO4 system, allows the formulation of new preparative procedures for Sn3PO4F3 and monoclinic Sn3(PO4)2.
6 citations
TL;DR: Results of visible/ultraviolet and infrared spectroscopic measurements, as well as chemical evidence, are presented which support the formation of a 2:1 bleomycin-VO2+ complex.
6 citations
TL;DR: In this article, the magnetic properties of NiTeMoO 6 in the temperature range 100 -300 K were investigated in order to obtain a wider insight into the structural properties of the M II TeMoO6 -type telluromolybdates.
4 citations
TL;DR: The resonance Raman spectrum of a polycrystalline sample of AgMnO4 allowed a wider insight into the vibrational properties of the MnO ion in this lattice and confirmed important covalent contributions to the overall structure and strong cooperative effects between the ions present in the unit cell as discussed by the authors.
Abstract: The resonance Raman spectrum of a polycrystalline sample of AgMnO4 allowed a wider insight into the vibrational properties of the MnO ion in this lattice. This study confirmed important covalent contributions to the overall structure and strong cooperative effects between the ions present in the unit cell.
3 citations
TL;DR: The analysis of the corresponding X 11 anharmonicity constants and full widths at half maxima of the members of the vν 1 progressions allowed a wider insight into the effects of the countercations on the vibrational properties of the MnO − 4 ion.
2 citations
TL;DR: In this article, the powder-infrared spectra of different crystalline compounds containing the tetrahedral Cro3-4, anion have been recorded and analyzed with the aid of the site symmetry rules.
Abstract: The powder-infrared spectra of different crystalline compounds containing the tetrahedral Cro3- 4, anion have been recorded and analyzed with the aid of the site symmetry rules. In some cases Raman data are also reported. The effect of the different crystalline environments is discussed in detail and comparisons with isostructural phases are also made. A definitive assignment for the internal vibrations of the CrO3- 4, ion is proposed and a new set of force constants has been calculated fron a modified valence force field.
2 citations
1 citations