Abstract
The crystal structure of Cd3Al2Si3O12 garnet grown by the solid state reaction method has been refined by the least squares method using 316 reflections measured with an automatic single crystal diffractometer. The unweighted R factor is 0.039 for 244 observed reflections. The cell dimensions are: a=11.805A, and V=1645.26A3; space group Ia3d. The Si-O distance is 1.644 (5)A. Comparison of the Si-O distance in the Cd3Al2Si3O12 garnet with those in six M2+3Al2Si3O12 garnets, previously published, indicates that the electronegativity of Cd2+ ion in the dodecahedral site of the garnet is about 1.3 in Pauling's scale. This value is more electropositive than the thermochemical electronegativity value (1.5). Since the ionicity of the chemical bonding increases with an increase in the coordination number, it seems that the electronegativity of Cd2+ ion decreases with an increase in the ionicity of the chemical bonding.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
