Synthesis, characterization, and X-ray powder structure of K2ZrGe2O7 Academic Article uri icon


  • A potassium zirconium pyrogermanate, K2ZrGe2O7, was synthesized hydrothermally at 180C from a mixture of zirconium propionate, GeO2, and KOH. The crystal structure was solved from in-house X-ray powder data by direct methods and Fourier analysis. Refinement of the structure was effected by the Rietveld full-pattern technique. The compound is monoclinic, space group C2/c, a=9.9619(2) , b=5.5578(1) , c=12.9555(3) , =105.169(1), Z=4. The structure is remarkably like that of -zirconium phosphate. Zr(HPO4)2H2O, except that the layers are crosslinked by the pyrogermanate group to form a three-dimensional lattice. Exchange of the K+ ions is minimal as they are strongly held within the confines of narrow tunnels. The relationship of this newly synthesized pyrogermanate to a sodium zirconium pyrogermanate prepared hydrothermally at 500C and Na3H(GeO4)2 is discussed. 1999 Academic Press.

published proceedings


altmetric score

  • 3

author list (cited authors)

  • Pertierra, P., Salvado, M. A., Garcia-Granda, S., Trabajo, C., Garcia, J. R., Bortun, A. I., & Clearfield, A.

citation count

  • 16

complete list of authors

  • Pertierra, P||Salvado, MA||Garcia-Granda, S||Trabajo, C||Garcia, JR||Bortun, AI||Clearfield, A

publication date

  • November 1999