Germanium tetrabromide

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Germanium tetrabromide
GeBr4.png
Names
IUPAC name
tetrabromogermane
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.270 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 236-612-1
PubChem CID
  • InChI=1S/Br4Ge/c1-5(2,3)4
    Key: VJHDVMPJLLGYBL-UHFFFAOYSA-N
  • [Ge](Br)(Br)(Br)Br
Properties
Br4Ge
Molar mass 392.246 g·mol−1
AppearanceColorless solid
Density 2.123 g/cm3
Melting point 26 °C (79 °F; 299 K)
Boiling point 185.9 °C (366.6 °F; 459.0 K)
Hazards
GHS labelling:
GHS-pictogram-acid.svg
Danger
H314
P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
Structure [1]
α-Cubic (SnI4 type)
β-Monoclinic (SnBr4 type)
Thermochemistry
83.3 kcal/mol
Related compounds
Other anions
Germanium tetrafluoride
Germanium tetrachloride
Germanium tetraiodide
Other cations
Carbon tetrabromide
Silicon tetrabromide
Tin(IV) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Germanium tetrabromide is the inorganic compound with the formula GeBr4. It is a colorless solid that melts near room temperature. It can be formed by treating solid germanium with bromine, or by treating a germanium-copper mixture with bromine: [2]

Ge + Br2 → GeBr4

From this reaction, GeBr4 has a heat of formation of 83.3 kcal/mol. [3]

The compound is liquid at 25 °C, and forms an interlocking liquid structure. [4] From room temperature down to −60 °C the structure takes on a cubic α form, whereas at lower temperatures it takes on a monoclinic β form.

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<span class="mw-page-title-main">Gallium(III) bromide</span> Chemical compound

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There are three sets of Indium halides, the trihalides, the monohalides, and several intermediate halides. In the monohalides the oxidation state of indium is +1 and their proper names are indium(I) fluoride, indium(I) chloride, indium(I) bromide and indium(I) iodide.

<span class="mw-page-title-main">Silicon tetrabromide</span> Chemical compound

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<span class="mw-page-title-main">Germanium(IV) iodide</span> Chemical compound

Germanium(IV) iodide is an inorganic compound with the chemical formula GeI4.

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<span class="mw-page-title-main">Lithium aluminium germanium phosphate</span> Chemical compound

Lithium aluminium germanium phosphate, typically known with the acronyms LAGP or LAGPO, is an inorganic ceramic solid material whose general formula is Li
1+x
Al
x
Ge
2-x
(PO
4
)
3
. LAGP belongs to the NASICON family of solid conductors and has been applied as a solid electrolyte in all-solid-state lithium-ion batteries. Typical values of ionic conductivity in LAGP at room temperature are in the range of 10–5 - 10–4 S/cm, even if the actual value of conductivity is strongly affected by stoichiometry, microstructure, and synthesis conditions. Compared to lithium aluminium titanium phosphate (LATP), which is another phosphate-based lithium solid conductor, the absence of titanium in LAGP improves its stability towards lithium metal. In addition, phosphate-based solid electrolytes have superior stability against moisture and oxygen compared to sulfide-based electrolytes like Li
10
GeP
2
S
12
(LGPS) and can be handled safely in air, thus simplifying the manufacture process. Since the best performances are encountered when the stoichiometric value of x is 0.5, the acronym LAGP usually indicates the particular composition of Li
1.5
Al
0.5
Ge
1.5
(PO
4
)
3
, which is also the typically used material in battery applications.

Osmium tetrabromide is the inorganic compound with the formula OsBr4. A black solid, this compound can be produced by heating osmium tetrachloride and bromine under pressure.

Sulfidogermanates or thiogermanates are chemical compounds containing anions with sulfur atoms bound to germanium. They are in the class of chalcogenidotetrelates. Related compounds include thiosilicates, thiostannates, selenidogermanates, telluridogermanates and selenidostannates.

Ytterbium compounds are chemical compounds that contain the element ytterbium (Yb). The chemical behavior of ytterbium is similar to that of the rest of the lanthanides. Most ytterbium compounds are found in the +3 oxidation state, and its salts in this oxidation state are nearly colorless. Like europium, samarium, and thulium, the trihalides of ytterbium can be reduced to the dihalides by hydrogen, zinc dust, or by the addition of metallic ytterbium. The +2 oxidation state occurs only in solid compounds and reacts in some ways similarly to the alkaline earth metal compounds; for example, ytterbium(II) oxide (YbO) shows the same structure as calcium oxide (CaO).

<span class="mw-page-title-main">Germanium dibromide</span> Chemical compound

Germanium dibromide is a bromide of germanium with the chemical formula GeBr2.

Thorium(IV) bromide is an inorganic compound, with the chemical formula of ThBr4.

References

  1. Köhler, J.; Okudera, Η.; Simon, A. (2005). "Crystal structure of germanium tetrabromide, β-GeBr4, low temperature modification". Zeitschrift für Kristallographie - New Crystal Structures. Walter de Gruyter GmbH. 220 (1–4): 554. doi: 10.1524/ncrs.2005.220.14.554 . ISSN   2197-4578.
  2. P. W. Schenk (1963). "Silicon and Germanium". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2page=718. NY, NY: Academic Press.
  3. Evans, D. F.; Richards, R. E. (1952). "233. The heats of formation of germanium tetrabromide and germanium tetraiodide". Journal of the Chemical Society (Resumed). Royal Society of Chemistry (RSC): 1292. doi:10.1039/jr9520001292. ISSN   0368-1769.
  4. Swamy, K. N.; Bhuiyan, L. B. (1980). "The Reference Interaction Site Model and the Structure of Liquid Germanium Tetrabromide". Physics and Chemistry of Liquids. Informa UK Limited. 9 (2): 169–174. doi:10.1080/00319108008084774. ISSN   0031-9104.