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The nature of subvalent gallium and indium in aqueous media
KTH, Superseded Departments, Chemistry.
KTH, Superseded Departments, Chemistry.ORCID iD: 0000-0001-6737-8233
2002 (English)In: Polyhedron, ISSN 0277-5387, Vol. 21, no 5-6, 519-524 p.Article in journal (Refereed) Published
Abstract [en]

Subvalent gallium can exist in aqueous solutions as Ga-Ga bonded gallium(II) species stabilised by halide ligands in the form of the complex anions Ga2X62- (X = Cl, Br or I) whose formation and reactivity are discussed. Gallium(I) compounds and mixed valence compounds of gallium react vigorously with water, converting any Ga+ ions into Ga(III) products. Indium(I) is more tolerant of water, so that perchlorate and other non-complexing aqueous media can support In+ ions at concentrations up to 10(-3) mol l(-1) before disproportionation to In(0) and In(III) occurs. Subvalent indium concentrations of approximately 10(-1) mol l(-1) are attained in halogen acid solution, particularly HBr which yields red, solid InBr upon dilution. Spectroscopic data suggest the precursor is an In(II)-In(II) bromide complex (probably In2Br62-) capable of breaking up into In(I) and In(III) products.

Place, publisher, year, edition, pages
2002. Vol. 21, no 5-6, 519-524 p.
Keyword [en]
subvalent indium and gallium, gallium(II), indium(I), indium(II), halide complexes, Raman spectra
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-5106DOI: 10.1016/S0277-5387(01)01030-0ISI: 000175462300007OAI: diva2:7871
QC 20101004Available from: 2005-05-15 Created: 2005-05-15 Last updated: 2010-10-04Bibliographically approved
In thesis
1. Geometric and Electronic Structure of Metal-Metal Bonded Systems
Open this publication in new window or tab >>Geometric and Electronic Structure of Metal-Metal Bonded Systems
2005 (English)Doctoral thesis, comprehensive summary (Other scientific)
Inorganic chemistry, Oorganisk kemi
National Category
Inorganic Chemistry
urn:nbn:se:kth:diva-197 (URN)91-7178-036-X (ISBN)
Public defence
2005-05-20, K1, Kemi, Teknikringen 56, Stockholm, 13:00
Available from: 2005-05-15 Created: 2005-05-15 Last updated: 2012-03-21

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