Synthesis and structural study of K2PbSi3O9 center dot H2O with the structure of kostylevite Academic Article uri icon


  • A new cyclohexasilicate, K2PbSi3O9H2O, was synthesized under mild hydrothermal conditions. The crystal structure was solved by powder X-ray diffraction data. The unit cell is monoclinic, a = 6.5623(2), b = 11.7757(3), c = 13.0483(3) , = 103.57(2), space group P21/n, Z = 4. The structure consists of a framework of isolated Si6O18 rings with the Pb(IV) located in octahedral holes. Thus, the structural formula can be written as Pb2K4{uB, 6t}[Si6O18]2H2O. The structure encloses one eight membered monodimensional channel running parallel to the a axis of about 3.0 5.5 2. This channel is filled with one of the two crystallographically independent potassium cations and the water molecules. A second smaller six-membered ring channel along a is also present and contains the second K+. This compound represents a monoclinic version of the better-known orthorhombic members of the family. 2001 Elsevier Science Ltd.

published proceedings


author list (cited authors)

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

citation count

  • 3

complete list of authors

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

publication date

  • February 2001