Vibrational spectrum of bismuth subcarbonate

The infrared and Raman spectra of bismuth subcarbonate, one of the most-commonly used Bi(III) compounds in pharmacology, are studied. The band positions in (BiO) sub(2)CO sub(3) times O times 5H sub(2)O lie very close to values measured in La sub(2)(CO sub(3)) sub(3), PbCO sub(3), and CaCO sub(3). I...

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Bibliographic Details
Published in:Journal of materials science letters 1997, Vol.16 (8), p.656-657
Main Authors: TOBON-ZAPATA, G. E, ETCHEVERRY, S. B, BARAN, E. J
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Infrared and raman spectra and scattering
Lattice dynamics
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other nonmetallic inorganics
Phonon states and bands, normal modes, and phonon dispersion
Phonons and vibrations in crystal lattices
Physics
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Summary:The infrared and Raman spectra of bismuth subcarbonate, one of the most-commonly used Bi(III) compounds in pharmacology, are studied. The band positions in (BiO) sub(2)CO sub(3) times O times 5H sub(2)O lie very close to values measured in La sub(2)(CO sub(3)) sub(3), PbCO sub(3), and CaCO sub(3). In comparison to the alkaline carbonates, stretching modes are found in a similar range in Na sub(2)CO sub(3) and K sub(2)CO sub(3). However, the bending modes lie somewhat lower. These comparisons show that the polarizing effect of the Bi sub(2)O super(2) sub(2) super(+) layers over the anionic carbonate groups is similar to that of Pb(II), a fact which is not totally unexpected, taking into account the position of both metals in the periodic system of the elements.
ISSN:0261-8028
DOI:10.1023/A:1018527602604