Crystal Growth and Structure of Three New Neodymium Containing Silicates: Na_0.50Nd_4.50(SiO₄)₃O, Na_0.63Nd_4.37(SiO₄)₃O_0.74F_0.26 and Na_4.74Nd_4.26(O_0.52F_0.48)[SiO₄]₄

Author(s)

Allison M. Latshaw, University of South Carolina - Columbia
Mark D. Smith, University of South Carolina - ColumbiaFollow
Hans-Conrad zur Loye, University of South Carolina - ColumbiaFollow

Document Type

Paper

Subject Area(s)

Chemsitry

Abstract

Single crystals of Na_0.50Nd_4.50(SiO₄)₃O, Na_0.63Nd_4.37(SiO₄)₃O_0.74F_0.26, and Na_4.74Nd_4.26(O_0.52F_0.48)[SiO₄]₄ were synthesized via flux growth using a NaF/KF eutectic flux and the crystal structure was determined by single crystal X-ray diffraction. Na_0.50Nd_4.50(SiO₄)₃O and Na_0.63Nd_4.37(SiO₄)₃O_0.74F_0.26 adopt the apatite structure and crystallize in the hexagonal space group P63/m, while Na_4.74Nd_4.26(O_0.52F_0.48)[SiO₄]₄ crystallizes in the tetragonal space group I-4 and exhibits rare-earth mixing on the sodium site. The unit cells of the crystals are a = 9.5400(3) Å and c = 7.0331(5) Å for Na_0.50Nd_4.50(SiO₄)₃O, a = 9.5533(3) Å and c = 7.0510(4) Å for Na_0.63Nd_4.37(SiO₄)₃O_0.74F_0.26, and a = 12.1255(3) Å and c = 5.4656(2) Å for Na_4.74Nd_4.26(O_0.52F_0.48)[SiO₄]₄. These three compounds exhibit three-dimensional crystal structures that are discussed in detail in this paper.

Digital Object Identifier (DOI)

https://doi.org/10.1016/j.solidstatesciences.2014.06.005

Publication Info

Published in Solid State Sciences, Volume 35, 2014, pages 28-32.

Rights

© Solid State Sciences 2014, Elsevier Masson SAS.

APA Citation

Latshaw, A., Smith, M., & zur Loye, H.-C. (2014). Crystal Growth and Structure of Three New Neodymium Containing Silicates: Na_0.50Nd_4.50(SiO₄)₃O, Na_0.63Nd_4.37(SiO₄)3O_0.74F_0.26 and Na_4.74Nd_4.26(O_0.52F_0.48)[SiO₄]₄. Solid State Sciences, 35, 28–32. https://doi.org/10.1016/j.solidstatesciences.2014.06.005