Abstract
The chemical and physical properties of glass and crystalline phases intimately depend upon their network structures. Phosphorosilicate phases possessing 1:1 SiO2/P2O5 molar ratios may contain six-coordinated silicon atoms in their solid state structures. For instance, X-ray diffraction analyses indicate that the crystal structures of the various SiP207 polymorphs do possess six-coordinated silicon atoms.1,2 This paper will investigate the vibrational spectra of various phosphorosilicate phases with 1:1 SiO2P2O5 molar ratios in order to obtain structural information. First, the infrared and Raman spectra will be investigated for various crystalline SiP207 polymorphs using normal coordinate analysis. This analysis will lead both to structural parameters such as force constants and to band assignments for phosphorosilicate phases with set crystalline structures possessing SiO6-units in their network. Then, the vibrational spectra of SiP2O7 glass will be analyzed to determine whether such structural arrangements with six-coordinated silicon atoms exist in the glasses. The structural and spectral changes which occur upon addition of Na2O to this glass will also be discussed.
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© 1985 Plenum Press, New York
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Chakraborty, I.N., Condrate, R.A. (1985). The Infrared and Raman Spectra of Phosphorosilicate Phases with 1:1 SiO2/P2O5 Molar Ratios. In: Snyder, R.L., Condrate, R.A., Johnson, P.F. (eds) Advances in Materials Characterization II. Materials Science Research, vol 19. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-9439-0_5
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DOI: https://doi.org/10.1007/978-1-4615-9439-0_5
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