Indium(III) bromide

Indium tribromide
Names
IUPAC name
Indium(III) bromide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.343 Edit this at Wikidata
EC Number
  • 236-692-8
UNII
  • InChI=1S/3BrH.In/h3*1H;/q;;;+3/p-3
    Key: JKNHZOAONLKYQL-UHFFFAOYSA-K
  • Br[In](Br)Br
Properties
InBr3
Molar mass 354.530 g/mol
Appearance hygroscopic yellow-white monoclinic crystals
Density 4.74 g/cm3
Melting point 420 °C (788 °F; 693 K)
414 g/100 mL at 20 °C
−107.0·10−6 cm3/mol
Structure
Monoclinic, mS16
C12/m1, No. 12
Thermochemistry
−428.9 kJ·mol−1
Hazards
GHS labelling:
GHS05: CorrosiveGHS07: Exclamation mark
Danger
H314, H315, H319, H335
P260, P264, P271, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501
Related compounds
Other cations
 indium(III) fluoride
indium(III) chloride
indium(III) iodide
Related compounds
 Indium(I) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Indium(III) bromide, (indium tribromide), InBr3, is a chemical compound of indium and bromine. It is a Lewis acid and has been used in organic synthesis.

Structure

It has the same crystal structure as aluminium trichloride, with 6 coordinate indium atoms. When molten it is dimeric, In2Br6, and predominantly dimeric in the gas phase. The dimer has bridging bromine atoms with a structure similar to dimeric aluminium trichloride Al2Cl6.

Preparation and reactions

It is formed by the reaction of indium and bromine. InBr3 forms complexes with ligands, L, InBr3L, InBr3L2, InBr3L3.

Reaction with indium metal forms lower valent indium bromides, InBr2, In4Br7, In2Br3, In5Br7, In7Br9, indium(I) bromide. In refluxing xylene solution InBr3 and In metal react to form InBr2.

References

  1. ↑ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, pp. 4–61, ISBN 0-8493-0594-2
  2. ↑ Thirupathi, Ponnaboina; Kim, Sung Soo (2009). "InBr3: A Versatile Catalyst for the Different Types of Friedel−Crafts Reactions". The Journal of Organic Chemistry. 74 (20): 7755–7761. doi:10.1021/jo9014613. ISSN 0022-3263. PMID 19813765.
  3. 1 2 3 "Indium: Inorganic chemistry", D.G Tuck, Encyclopedia of Inorganic Chemistry Editor R Bruce King (1994) John Wiley and Sons ISBN 0-471-93620-0
  4. ↑ Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0123526515
  5. ↑ Staffel, Thomas; Meyer, Gerd (1987). "The mono-, sesqui-, and dibromides of indium: InBr, In2Br3, and InBr2". Zeitschrift für anorganische und allgemeine Chemie. 552 (9): 113–122. doi:10.1002/zaac.19875520913. ISSN 0044-2313.
  6. ↑ Ruck, Michael; Bärnighausen, Hartmut (1999). "Zur Polymorphie von In5Br7". Zeitschrift für anorganische und allgemeine Chemie. 625 (4): 577–585. doi:10.1002/(SICI)1521-3749(199904)625:4<577::AID-ZAAC577>3.0.CO;2-B. ISSN 0044-2313.
  7. ↑ Dronskowski, R. (1995). "The crystal structure of In7Br9". Zeitschrift für Kristallographie. 210 (12): 920–923. Bibcode:1995ZK....210..920D. doi:10.1524/zkri.1995.210.12.920. ISSN 0044-2968.
  8. ↑ Stephenson, NC; Mellor, DP (1950). "The Crystal Structure of Indium Monobromide". Australian Journal of Chemistry. 3 (4): 581. Bibcode:1950AuSRA...3..581S. doi:10.1071/CH9500581. ISSN 0004-9425.
  9. ↑ Freeland, B. H.; Tuck, D. G. (1976). "Facile synthesis of the lower halides of indium". Inorganic Chemistry. 15 (2): 475–476. doi:10.1021/ic50156a050. ISSN 0020-1669.