Synthesis and characterization of new quaternary niobium selenites

European Chemistry Congress

June 16-18, 2016 Rome, Italy

Bongsu Kim, Youngkwon Kim and Kang Min Ok

Chung-Ang University, Republic of Korea

Posters & Accepted Abstracts: Chem Sci J

Abstract :

Single crystals and pure polycrystalline samples of new alkali metal niobium selenites have been prepared through hydrothermal and standard solid-state reaction techniques. Single crystal X-ray diffraction was used to determine crystal structures of all four materials. While NaNbO(SeO3)2 is configured with corner-shared zigzag chains of NbO6 octahedra and SeO3 intrachain connectors, three isostructural ANbO(SeO3)2 (A = K, Rb, and Cs) exhibit a layered structure that is composed of distorted NbO6 octahedra and SeO3 polyhedra. Detailed structureal analysis suggests that the size and the coordination environment of alkali metal cations particularly affect the backbone geometries and the dimensions of this materials. Full characterizations including X-ray diffraction, Scanning Electron Microscopy (SEM), infrared and UV-Vis diffuse reflectance spectroscopies, thermal analyses, and dipole moment calculations for the new alkali metal niobium selenites will be presented. Moreover, The future plan about similar compounds using Te4+ ;ANbO(TeO3)2 (A = Na, K, Rb, and Cs) will be described.

Biography :

Bongsu Kim has completed his bachelor degree at the age of 26 years from An-dong University School and now he has been studying for master degree from Chung-Ang University School of seoul. While His major is solid chemistry. He focus on the study about new materals of Non-Centro Symmetric(NCS) and MetalOrganic Frameworks(MOFs).
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