Ceramics-Silikáty 20, (3) 207 - 213 (1976) |
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INFRARED SPECTRA OF THE SYSTEM AKERMANITE-DIOPSIDE
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Pisárčik Miroslav 1, Proks Ivo 1, Jansta Vladimír 2
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1 Institute of Inorganic Chemistry, Slovak Academy of Sciences, 809 34 Bratislava, Dúbravská cesta 5
2 Slovak Technical University, Department of Physical Chemistry, 880 37 Bratislava, Jánská 1
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Investigation of the 700 cm-1 and 350 cm-1 regions of infrared absorption spectra of rapidly quenched akermanite melts implies that its melting brings about formation of shorter (n > 2) chains of SiO₄ tetrahedrons. On the basis of an empirical relationship between the Si-O-Si angle and the frequency of type A1 valency vibration in crystalline akermanite, the informative value of this angle was found to be 143 deg. |
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