Ditellurium bromide

Crystal structure
__ Te      __ Br chain structure of ditellurium bromide
General
Surname	Ditellurium bromide
other names	Tellurium subbromide
Ratio formula	Te 2 Br
Brief description	gray solid
External identifiers / databases
CAS number 12514-37-3 PubChem 6365207 ChemSpider 4896021 Wikidata Q2624260
properties
Molar mass	335.10 g mol −1
Physical state	firmly
density	5.72 g cm −3
Melting point	224 ° C
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Ditellurium bromide is a chemical compound of tellurium from the group of bromides .

Extraction and presentation

Ditellurium bromide can be obtained by reacting tellurium with tellurium tetrabromide in an ionic liquid and adding small amounts of sodium chloride . The compound can also be prepared by reacting tellurium with bromine in vacuo at 215 ° C.

properties

Ditellur bromide is a gray solid. It has an orthorhombic crystal structure with the space group Pnma (space group no. 62) . The structure consists of infinite double chains with three and four tellurium atoms, which are condensed into ribbons of Te ₆ rings with a boat conformation and contain bridging halogen atoms at the edges.

Individual evidence

1. ^ ^{A b c d} Carl L. Yaws: The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics . Gulf Professional Publishing, 2015, ISBN 978-0-12-801146-1 , pp. 802 ( limited preview in Google Book Search).
2. ^ ^{A b c} Matthias F. Groh, Ulrike Müller, Ejaz Ahmed, Alexander Rothenberger, Michael Ruck: Substitution of Conventional High-temperature Syntheses of Inorganic Compounds by Near-room-temperature Syntheses in Ionic Liquids. In: Zeitschrift für Naturforschung B. 68, 2013, doi : 10.5560 / ZNB.2013-3141 .
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
4. ↑ Francesco Devillanova: Handbook of Chalcogen Chemistry New Perspectives in Sulfur, Selenium and Tellurium . Royal Society of Chemistry, 2007, ISBN 978-1-84755-757-5 , pp. 464 ( limited preview in Google Book search).
5. ^ GA Sim, L. E Sutton: Molecular Structure by Diffraction Methods . Royal Society of Chemistry, 2007, ISBN 978-1-84755-676-9 , pp. 480 ( limited preview in Google Book Search).
6. ↑ R. Kniep, D. Mootz, A. Rabenau: On the knowledge of the subhalides of tellurium. In: Journal of Inorganic and General Chemistry. 422, 1976, p. 17, doi : 10.1002 / zaac.19764220103 .