Abstract
K3FeTe2O8(OH)2(H2O)2 was synthesized under hydrothermal conditions from Te(OH)6, FeSO4·7H2O and 85 wt% KOH in a 1:2:6 molar ratio. The crystal structure is built of a triperiodic network. One disordered water molecule per formula unit is located in a channel and can be partially removed by heating. Systematic one-dimensional diffuse scattering indicates a polytypic character, which is best described by application of the order–disorder theory. The major polytype is monoclinic with pseudo-orthorhombic metrics. It is interrupted by fragments of an orthorhombic polytype. The diffraction intensities are analyzed using structure factor calculations.
Publisher
International Union of Crystallography (IUCr)
Subject
Materials Chemistry,Metals and Alloys,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Reference20 articles.
1. Baake, M. & Grimm, U. (2013). Aperiodic Order, Vol. 1. Cambridge University Press.
2. Bricogne, G. (2010). In Reciprocal space, Vol. B of International Tables for Crystallography, ch. 3.3, pp. 24-113. Chester: IUCr.
3. Bruker (2022). APEXII, RLATT, SAINT, SADABS and TWINABS. Bruker AXS Inc., Madison, Wisconsin, USA.
4. OLEX2: a complete structure solution, refinement and analysis program
5. Geometrical properties of MDO polytypes and procedures for their derivation. II. OD families containing OD layers ofM> 1 kinds and their MDO polytypes