Synthesis, Crystal Structure, and IR and Mössbauer Spectroscopy of the Isotypic Series M₃Fe₂(SeO₃)₆•2H₂O (M=Mg,Co,Ni)

Author(s)

Gerald Giester, Anton Beran, Günther J. Redhammer

Abstract

The representatives of the new isotypic series M3Fe2(SeO3)6.2H2O (M = Mg, Co, Ni) were prepd. at 500 K from aq. solns., kept in Teflon-coated autoclaves. Their crystal structures were detd. by direct methods from single-crystal x-ray diffraction data in the space group P.hivin.1 with Z = 1. Mg3Fe2(SeO3)6.2H2O: a 6.494(2), b 7.959(3), c 8.810(4) .ANG., alpha 85.88(2), beta 79.12(2), gamma 76.09(2)°, V = 433.9 .ANG.3. Co3Fe2(SeO3)6.2H2O: a 6.520(2), b 7.995(3), c 8.774(4) .ANG., alpha 85.51(2), beta 78.77(1), gamma 75.84(1)°, V = 434.8 .ANG.3. Ni3Fe2(SeO3)6.2H2O: a 6.474(2), b 7.943(3), c 8.736(4) .ANG., alpha 85.37(1), beta 78.51(1), gamma 75.91(1)°, V = 426.7 .ANG.3. The three different M sites are commonly occupied by M2+ and Fe3+ atoms in varying ratios. MO6 octahedra are linked to each other by edges to build four-membered groups. Via common corners with further MO6 octahedra and trigonal pyramidal SeO3 groups, complex sheets parallel to (001) are formed which are interconnected by H bonds only. IR and Moessbauer spectra and the thermal decompn. of the compds. are discussed.

Organisation(s)

Department of Mineralogy and Crystallography

External organisation(s)

Paris-Lodron Universität Salzburg

Journal

Journal of Solid State Chemistry

Volume

131

Pages

54-63

No. of pages

10

ISSN

0022-4596

DOI

https://doi.org/10.1006/jssc.1997.7339

Publication date

1997

Peer reviewed

Yes

Austrian Fields of Science 2012

105113 Crystallography, 104026 Spectroscopy

Portal url

https://ucrisportal.univie.ac.at/en/publications/e3e58eb7-b4f7-4433-a9d2-cc1fcb985a74