Synthesis, structure, and characterization of a new one-dimensional tellurite phosphate, Ba2TeO(PO4)2 |
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| Authors: | Kang Min Ok |
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| Institution: | Department of Chemistry and Center for Materials Chemistry, University of Houston, 136 Fleming Building, Houston, TX 77204-5003, USA |
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| Abstract: | A new one-dimensional tellurite phosphate, Ba2TeO(PO4)2 has been synthesized by standard solid-state reaction techniques using BaCO3, TeO2, and (NH4)H2PO4 as reagents. The structure of Ba2TeO(PO4)2 was determined by single-crystal X-ray diffraction. Ba2TeO(PO4)2 crystallizes in the triclinic space group P-1 (No. 2), with  ,  ,  , α=76.843(4)°, β=79.933(4)°, γ=75.688(4)°,  , and Z=2. Ba2TeO(PO4)2 has a novel one-dimensional chain structure that is composed of PO4 tetrahedra and TeO5 polyhedra. Te4+ cations are in asymmetric coordination environments attributable to their lone pairs. The lone pairs on the Te4+ cations point in the 100] and −100] direction and interact with the Ba2+ cations. Infrared, Raman, and UV-Vis diffuse reflectance spectroscopy, thermogravimetric analysis, and dipole moment calculations are also presented. |
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| Keywords: | Synthesis Tellurite Phosphate One-dimensional structure |
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