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Indium(III) bromide
Chemical compound

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.

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Structure

It has the same crystal structure as aluminium trichloride, with 6 coordinate indium atoms.2 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 Al2Cl6.3

Preparation and reactions

It is formed by the reaction of indium and bromine.4 InBr3 forms complexes with ligands, L, InBr3L, InBr3L2, InBr3L3.5

Reaction with indium metal forms lower valent indium bromides, InBr2, In4Br7, In2Br3, In5Br7, In7Br9, indium(I) bromide.6789 In refluxing xylene solution InBr3 and In metal react to form InBr2.10

References

  1. 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. /wiki/Doi_(identifier) ↩

  2. "Indium: Inorganic chemistry", D.G Tuck, Encyclopedia of Inorganic Chemistry Editor R Bruce King (1994) John Wiley and Sons ISBN 0-471-93620-0 /wiki/ISBN_(identifier) ↩

  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 /wiki/ISBN_(identifier) ↩

  4. Egon Wiberg, Arnold Frederick Holleman (2001) Inorganic Chemistry, Elsevier ISBN 0123526515 /wiki/ISBN_(identifier) ↩

  5. "Indium: Inorganic chemistry", D.G Tuck, Encyclopedia of Inorganic Chemistry Editor R Bruce King (1994) John Wiley and Sons ISBN 0-471-93620-0 /wiki/ISBN_(identifier) ↩

  6. 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. /wiki/Doi_(identifier) ↩

  7. 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. /wiki/Doi_(identifier) ↩

  8. 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. /wiki/Bibcode_(identifier) ↩

  9. 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. /wiki/Bibcode_(identifier) ↩

  10. 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. /wiki/Doi_(identifier) ↩