he crystal structure of christelite Zn3Cu2(SO4)2(OH)6 · 4 H2O

Link:
Autor/in:
Erscheinungsjahr:
1996
Medientyp:
Text
Schlagworte:
  • Christelite
  • Natural single crystal
  • Zn-Cu minerals
Beschreibung:
  • The crystal structure of christelite Zn3Cu2· (SO4)2(OH)6· 4 H20 (space group P1; lattice parameters a = 5.4143(8) Å, b = 6.336(1) Å, c = 10.470(3) Å, α = 94.32(3)°, β = 90.06(2)°, γ = 90.27(2)°) was solved using direct methods and difference Fourier-syntheses. The structure was refined to a final R(F)-value of 0.033. The structure contains distorted [(Zn, Cu)O6] octahedra which are connected as to form sheets of composition 2x(Cu,Zn)2(OH)3O]-. These sheets are similar to those observed in the mineral ktenasite. In both structures sulphate groups are attached to the sheets of octahedra through common vertices. In christelite the tetrahedral [S04] groups are linked to isolated [Zn(H2O)4O2] octahedra thus forming a three-dimensional structure, whereas in the structure of ktenasite the [S04] tetrahedra are bonded to isolated [Zn(H2O)6] by a system of hydrogen bonds. The relationship of christelite with other minerals is pointed out and discussed. © 1996, Walter de Gruyter. All rights reserved.
Lizenz:
  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/a7a8397c-0e72-4c50-8263-79b5440ccfac