Issue 27, 2014

Dimensionality variations in new zirconium iodates: hydrothermal syntheses, structural determination, and characterization of BaZr(IO3)6 and K2Zr(IO3)6

Abstract

Two new quaternary zirconium iodates, BaZr(IO3)6 and K2Zr(IO3)6, have been synthesized through hydrothermal reactions using BaCO3 (or K2CO3), ZrO2, and HIO3 as reagents. Single crystal and powder X-ray diffraction were used to determine crystal structures of the compounds. BaZr(IO3)6 exhibits infinite bands that are composed of ZrO7 pentagonal bipyramids and IO3 trigonal pyramids, in which Ba2+ cations are sandwiched by the bands. K2Zr(IO3)6 exhibits a molecular structure that is composed of ZrO6 octahedra and IO3 groups. The dimensionality variations seem to be attributable to the flexible coordination numbers of Zr4+ cations with large ionic radii as well as the number of counter cations. Both of the materials are thermally stable up to approximately 440–450 °C and decompose to the corresponding metal zirconium oxides above these temperatures. The band gaps for BaZr(IO3)6 and K2Zr(IO3)6 are calculated to be 3.1 and 3.0 eV, respectively, using the (K/S)-versus-E plots obtained from the UV-vis diffuse reflectance spectra. Infrared spectra and local dipole moment calculations are also presented.

Graphical abstract: Dimensionality variations in new zirconium iodates: hydrothermal syntheses, structural determination, and characterization of BaZr(IO3)6 and K2Zr(IO3)6

Supplementary files

Article information

Article type
Paper
Submitted
02 Jan 2014
Accepted
13 Feb 2014
First published
13 Feb 2014

Dalton Trans., 2014,43, 10456-10461

Author version available

Dimensionality variations in new zirconium iodates: hydrothermal syntheses, structural determination, and characterization of BaZr(IO3)6 and K2Zr(IO3)6

H. S. Ahn, D. W. Lee and K. M. Ok, Dalton Trans., 2014, 43, 10456 DOI: 10.1039/C4DT00008K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements