Abstract
Two new lanthanum antimony oxides, LaSb3O9 and LaSb5O12, have been synthesized as bulk phase powders and single crystals by solid state reactions using La2O3 (or La(NO3)3·xH2O), Sb2O3 and Sb2O5 as reagents. The structures of LaSb3O9 and LaSb5O12 were determined by single crystal X-ray diffraction. LaSb3O9 contains exclusively Sb5+ cations, whereas LaSb5O12 contains both Sb3+ and Sb5+ cations. LaSb3O9 has a novel three-dimensional framework consisting of edge- and corner-shared Sb5+O6 octahedra. LaSb5O12 exhibits a layered crystal structure consisting of corner-shared Sb5+O6 octahedra. The Sb3+O3 groups cap the SbO6 layers from above and below. The Sb3+ cations are in asymmetric coordination environments attributable to their stereo-active lone-pair. We also report on the reaction of three-dimensional LaSb3O9 with Sb2O3 to form the two-dimensional LaSb5O12. Infrared, thermogravimetric and dielectric analyses are also presented.
Sign-in/Register to access full text options 
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 callDisclaimer: 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.
