Authors:	Weber, Anna Katharina Denisova, Ksenia Lemmens, Peter Möller, Angela
Title:	Configuration of the dimolybdate in salt inclusion type of compounds, Cs2Mo2O7 ⋅ CsX (X=Cl, Br, and I)
Online publication date:	6-Dec-2023
Year of first publication:	2023
Language:	english
Abstract:	Cs2Mo2O7 ⋅ CsI is obtained as a member of the series Cs2Mo2O7 ⋅ CsX with X=Cl, Br, and I from the synthesis of Cs2MoO4 with MoO3 and CsX. At room temperature, the compounds crystallize in the space group P63/mmc with the dimolybdate, [Mo2O7]2−, in a linear and eclipsed conformation. Low temperature Raman spectroscopy and low temperature X-ray diffraction were used to investigate the effect of the urn:x-wiley:00442313:media:zaac202300199:zaac202300199-math-0001 hetero-honeycomb lattice on the bridging angle of the dimolybdate. For X=Cl, a phase transition occurs below 150 K (P63/mmc → Cmcm). The phase transition relates to a lock-in that involves bending of the (Mo−O−Mo) bridge. For the Pearson softer iodide compound, no phase transition is observed down to 4 K; thus, the linear configuration remains stable. Specific heat data and their evaluation in terms of phonon contributions are given.
DDC:	540 Chemie 540 Chemistry and allied sciences
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 09 Chemie, Pharmazie u. Geowissensch.
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-9761
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/4.0/
Journal:	Zeitschrift für anorganische und allgemeine Chemie Version of Record (VoR)
Pages or article number:	e202300199
Publisher:	Wiley-VCH
Publisher place:	Weinheim
Issue date:	2023
ISSN:	1521-3749
Publisher DOI:	10.1002/zaac.202300199
Appears in collections:	DFG-491381577-H