Synthesis and single-crystal structure of Cs3Zn4O(AsO4)(3)center dot 4H(2)O, an open-framework zinc arsenate

W T A Harrison, M L F Phillips, X H Bu

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Abstract

The synthesis and crystal structure of caesium zinc arsenate hydrate, Cs3Zn4O(AsO4)(3) . 4H(2)O(3) are described. This open-framework zincoarsenate, which is built up from a three-dimensional network of vertex-sharing ZnO4 and AsO4 tetrahedra, shows post-dehydration thermal stability to at least 600 degrees C. A model involving merohedral rotational twinning about [001] was required to arrive at a satisfactory single-crystal structure solution. Crystal data. Cs3Zn4O(AsO4)(3). 4H(2)O, M-r = 1165.05, tetragonal, space group P (4) over bar, (no. 81), a = 11.3099(2) Angstrom, c = 7.9216(2) Angstrom, V = 1013.28(4) Angstrom(3), Z = 2, R(F) = 3.90%, R-w(F) = 4.81% (740 reflections with I > 3 sigma(I), 81 parameters). (C) 2000 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)359-365
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume39
Publication statusPublished - 2000

Keywords

  • zincophosphate
  • twinning
  • pharmacosiderite
  • open framework
  • ION-EXCHANGE PROPERTIES
  • PHASES
  • PHARMACOSIDERITE
  • ZINCOPHOSPHATE
  • DIFFRACTION
  • FAMILY
  • RB

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