Octahedral-tetrahedral framework structures of InAsO₄•H₂O and PbIn(AsO₄)(AsO₃OH)

Author(s)

Uwe Kolitsch, Karolina Schwendtner

Abstract

Indium arsenate(V) monohydrate, InAsO4×H2O, (I), crystallizes in the structure type of MnMoO4×H 2O. The structure is built of In2O8(H 2O)2 dimers (mean In-O = 2.150 A°), corner-linked to slightly distorted AsO4 tetrahedra (mean As-O = 1.686 A°). The linkage results in a three-dimensional framework, with small voids into which the apical water ligand of the InO5(H2O) octahedron points. The hydrogen bonds in (I) are of medium strength. Lead(II) indium arsenate(V) hydrogen arsenate(V), PbIn(AsO4)(AsO3OH), (II), represents the first reported lead indium arsenate. It is characterized by a framework structure of InO6, octahedra corner-linked to AsO 4 and AsO3OH tetrahedra. The resulting voids are occupied by Pb2O10(OH)2 dimers built of two edge-sharing highly distorted PbO6(OH) polyhedra (mean Pb-O = 2.623 A°). The compound is isotypic with PbFeIII(AsO4)(AsO 3OH). The average In-O bond length in (II) is 2.157 A°. In both arsenates, all atoms are in general positions. Œ 2005 International Union of Crystallography.

Organisation(s)

Department of Mineralogy and Crystallography

Journal

Acta Crystallographica. Section C: Crystal Structure Communications

Volume

61

Pages

i86-i89

No. of pages

4

ISSN

0108-2701

DOI

https://doi.org/10.1107/S0108270105022894

Publication date

2005

Peer reviewed

Yes

Austrian Fields of Science 2012

1051 Geology, Mineralogy

Portal url

https://ucrisportal.univie.ac.at/en/publications/c3c578d0-898c-4d5c-8314-a18d9ed9cc08